diff --git a/phpstan-baseline.php b/phpstan-baseline.php
index 3793c6407323..759a007a651d 100644
--- a/phpstan-baseline.php
+++ b/phpstan-baseline.php
@@ -2056,26 +2056,6 @@
 	'count' => 2,
 	'path' => __DIR__ . '/system/Encryption/Handlers/SodiumHandler.php',
 ];
-$ignoreErrors[] = [
-	'message' => '#^Parameter \\#1 \\$value \\(bool\\|int\\|string\\) of method CodeIgniter\\\\Entity\\\\Cast\\\\IntBoolCast\\:\\:set\\(\\) should be contravariant with parameter \\$value \\(array\\|bool\\|float\\|int\\|object\\|string\\|null\\) of method CodeIgniter\\\\Entity\\\\Cast\\\\BaseCast\\:\\:set\\(\\)$#',
-	'count' => 1,
-	'path' => __DIR__ . '/system/Entity/Cast/IntBoolCast.php',
-];
-$ignoreErrors[] = [
-	'message' => '#^Parameter \\#1 \\$value \\(bool\\|int\\|string\\) of method CodeIgniter\\\\Entity\\\\Cast\\\\IntBoolCast\\:\\:set\\(\\) should be contravariant with parameter \\$value \\(array\\|bool\\|float\\|int\\|object\\|string\\|null\\) of method CodeIgniter\\\\Entity\\\\Cast\\\\CastInterface\\:\\:set\\(\\)$#',
-	'count' => 1,
-	'path' => __DIR__ . '/system/Entity/Cast/IntBoolCast.php',
-];
-$ignoreErrors[] = [
-	'message' => '#^Parameter \\#1 \\$value \\(int\\) of method CodeIgniter\\\\Entity\\\\Cast\\\\IntBoolCast\\:\\:get\\(\\) should be contravariant with parameter \\$value \\(array\\|bool\\|float\\|int\\|object\\|string\\|null\\) of method CodeIgniter\\\\Entity\\\\Cast\\\\BaseCast\\:\\:get\\(\\)$#',
-	'count' => 1,
-	'path' => __DIR__ . '/system/Entity/Cast/IntBoolCast.php',
-];
-$ignoreErrors[] = [
-	'message' => '#^Parameter \\#1 \\$value \\(int\\) of method CodeIgniter\\\\Entity\\\\Cast\\\\IntBoolCast\\:\\:get\\(\\) should be contravariant with parameter \\$value \\(array\\|bool\\|float\\|int\\|object\\|string\\|null\\) of method CodeIgniter\\\\Entity\\\\Cast\\\\CastInterface\\:\\:get\\(\\)$#',
-	'count' => 1,
-	'path' => __DIR__ . '/system/Entity/Cast/IntBoolCast.php',
-];
 $ignoreErrors[] = [
 	'message' => '#^Construct empty\\(\\) is not allowed\\. Use more strict comparison\\.$#',
 	'count' => 4,
diff --git a/rector.php b/rector.php
index c2b76343dfff..62b458411884 100644
--- a/rector.php
+++ b/rector.php
@@ -77,6 +77,12 @@
         __DIR__ . '/tests/system/Config/fixtures',
         __DIR__ . '/tests/system/Filters/fixtures',
         __DIR__ . '/tests/_support',
+
+        // Error: ] Could not process "tests/system/Entity/EntityLiveTest.php" file, due
+        //         to:
+        //         "Call to a member function getValue() on bool". On line: 172
+        __DIR__ . '/tests/system/Entity/EntityLiveTest.php',
+
         JsonThrowOnErrorRector::class,
         YieldDataProviderRector::class,
 
diff --git a/system/BaseModel.php b/system/BaseModel.php
index 63a87e587828..588ae1951786 100644
--- a/system/BaseModel.php
+++ b/system/BaseModel.php
@@ -17,6 +17,7 @@
 use CodeIgniter\Database\Exceptions\DatabaseException;
 use CodeIgniter\Database\Exceptions\DataException;
 use CodeIgniter\Database\Query;
+use CodeIgniter\Entity\Entity;
 use CodeIgniter\Exceptions\ModelException;
 use CodeIgniter\I18n\Time;
 use CodeIgniter\Pager\Pager;
@@ -1684,8 +1685,11 @@ protected function objectToArray($data, bool $onlyChanged = true, bool $recursiv
      */
     protected function objectToRawArray($data, bool $onlyChanged = true, bool $recursive = false): array
     {
+        if ($data instanceof Entity) {
+            $properties = $data->toDatabase($onlyChanged, $recursive);
+        }
         // @TODO Should define Interface or Class. Entity has toRawArray() now.
-        if (method_exists($data, 'toRawArray')) {
+        elseif (method_exists($data, 'toRawArray')) {
             $properties = $data->toRawArray($onlyChanged, $recursive);
         } else {
             $mirror = new ReflectionClass($data);
@@ -1706,7 +1710,7 @@ protected function objectToRawArray($data, bool $onlyChanged = true, bool $recur
     }
 
     /**
-     * Transform data to array.
+     * Transform data to array that can be save to database.
      *
      * @param array|object|null $data Data
      * @param string            $type Type of data (insert|update)
diff --git a/system/Database/MySQLi/Result.php b/system/Database/MySQLi/Result.php
index 578169deb757..049ab5c699e0 100644
--- a/system/Database/MySQLi/Result.php
+++ b/system/Database/MySQLi/Result.php
@@ -148,7 +148,7 @@ protected function fetchAssoc()
     protected function fetchObject(string $className = 'stdClass')
     {
         if (is_subclass_of($className, Entity::class)) {
-            return empty($data = $this->fetchAssoc()) ? false : (new $className())->injectRawData($data);
+            return empty($data = $this->fetchAssoc()) ? false : (new $className())->fromDatabase($data);
         }
 
         return $this->resultID->fetch_object($className);
diff --git a/system/Database/OCI8/Result.php b/system/Database/OCI8/Result.php
index 01025763d423..af9c103924e5 100644
--- a/system/Database/OCI8/Result.php
+++ b/system/Database/OCI8/Result.php
@@ -103,7 +103,7 @@ protected function fetchObject(string $className = 'stdClass')
             return $row;
         }
         if (is_subclass_of($className, Entity::class)) {
-            return (new $className())->injectRawData((array) $row);
+            return (new $className())->fromDatabase((array) $row);
         }
 
         $instance = new $className();
diff --git a/system/Database/Postgre/Result.php b/system/Database/Postgre/Result.php
index 0a828757632e..5109f77e747e 100644
--- a/system/Database/Postgre/Result.php
+++ b/system/Database/Postgre/Result.php
@@ -114,7 +114,7 @@ protected function fetchAssoc()
     protected function fetchObject(string $className = 'stdClass')
     {
         if (is_subclass_of($className, Entity::class)) {
-            return empty($data = $this->fetchAssoc()) ? false : (new $className())->injectRawData($data);
+            return empty($data = $this->fetchAssoc()) ? false : (new $className())->fromDatabase($data);
         }
 
         return pg_fetch_object($this->resultID, null, $className);
diff --git a/system/Database/SQLSRV/Result.php b/system/Database/SQLSRV/Result.php
index f245a01669c6..9f43025c9217 100755
--- a/system/Database/SQLSRV/Result.php
+++ b/system/Database/SQLSRV/Result.php
@@ -154,7 +154,7 @@ protected function fetchAssoc()
     protected function fetchObject(string $className = 'stdClass')
     {
         if (is_subclass_of($className, Entity::class)) {
-            return empty($data = $this->fetchAssoc()) ? false : (new $className())->injectRawData($data);
+            return empty($data = $this->fetchAssoc()) ? false : (new $className())->fromDatabase($data);
         }
 
         return sqlsrv_fetch_object($this->resultID, $className);
diff --git a/system/Database/SQLite3/Result.php b/system/Database/SQLite3/Result.php
index f3887b044b49..10cfb247673e 100644
--- a/system/Database/SQLite3/Result.php
+++ b/system/Database/SQLite3/Result.php
@@ -142,7 +142,7 @@ protected function fetchObject(string $className = 'stdClass')
         $classObj = new $className();
 
         if (is_subclass_of($className, Entity::class)) {
-            return $classObj->injectRawData($row);
+            return $classObj->fromDatabase($row);
         }
 
         $classSet = Closure::bind(function ($key, $value) {
diff --git a/system/Entity/Cast/ArrayCast.php b/system/Entity/Cast/ArrayCast.php
index 315f2e582fec..e2e00a28bff6 100644
--- a/system/Entity/Cast/ArrayCast.php
+++ b/system/Entity/Cast/ArrayCast.php
@@ -19,10 +19,14 @@ class ArrayCast extends BaseCast
     /**
      * {@inheritDoc}
      */
-    public static function get($value, array $params = []): array
+    public static function fromDatabase($value, array $params = []): array
     {
-        if (is_string($value) && (strpos($value, 'a:') === 0 || strpos($value, 's:') === 0)) {
-            $value = unserialize($value);
+        if (! is_string($value)) {
+            self::invalidTypeValueError($value);
+        }
+
+        if ((strpos($value, 'a:') === 0 || strpos($value, 's:') === 0)) {
+            $value = unserialize($value, ['allowed_classes' => false]);
         }
 
         return (array) $value;
@@ -31,8 +35,12 @@ public static function get($value, array $params = []): array
     /**
      * {@inheritDoc}
      */
-    public static function set($value, array $params = []): string
+    public static function toDatabase($value, array $params = []): string
     {
+        if (! is_array($value) && ! is_string($value)) {
+            self::invalidTypeValueError($value);
+        }
+
         return serialize($value);
     }
 }
diff --git a/system/Entity/Cast/BaseCast.php b/system/Entity/Cast/BaseCast.php
index bfb156da3e53..96fa5f61bc4f 100644
--- a/system/Entity/Cast/BaseCast.php
+++ b/system/Entity/Cast/BaseCast.php
@@ -11,13 +11,16 @@
 
 namespace CodeIgniter\Entity\Cast;
 
+use TypeError;
+
 /**
  * Class BaseCast
  */
 abstract class BaseCast implements CastInterface
 {
     /**
-     * Get
+     * Returns value when getting the Entity property.
+     * This method is normally returns the value as it is.
      *
      * @param array|bool|float|int|object|string|null $value  Data
      * @param array                                   $params Additional param
@@ -30,7 +33,7 @@ public static function get($value, array $params = [])
     }
 
     /**
-     * Set
+     * Returns value for Entity property when setting the Entity property.
      *
      * @param array|bool|float|int|object|string|null $value  Data
      * @param array                                   $params Additional param
@@ -41,4 +44,42 @@ public static function set($value, array $params = [])
     {
         return $value;
     }
+
+    /**
+     * Takes the Entity property value, returns its value for database.
+     *
+     * @param array|bool|float|int|object|string|null $value  Data
+     * @param array                                   $params Additional param
+     *
+     * @return bool|float|int|string|null
+     */
+    public static function toDatabase($value, array $params = [])
+    {
+        return $value;
+    }
+
+    /**
+     * Takes value from database, returns its value for the Entity property.
+     *
+     * @param bool|float|int|string|null $value  Data
+     * @param array                      $params Additional param
+     *
+     * @return array|bool|float|int|object|string|null
+     */
+    public static function fromDatabase($value, array $params = [])
+    {
+        return $value;
+    }
+
+    /**
+     * Throws TypeError
+     *
+     * @param mixed $value
+     *
+     * @return never
+     */
+    protected static function invalidTypeValueError($value)
+    {
+        throw new TypeError('Invalid type value: ' . var_export($value, true));
+    }
 }
diff --git a/system/Entity/Cast/BooleanCast.php b/system/Entity/Cast/BooleanCast.php
index f46f5f5326bb..b3833177a0b1 100644
--- a/system/Entity/Cast/BooleanCast.php
+++ b/system/Entity/Cast/BooleanCast.php
@@ -19,8 +19,20 @@ class BooleanCast extends BaseCast
     /**
      * {@inheritDoc}
      */
-    public static function get($value, array $params = []): bool
+    public static function set($value, array $params = []): bool
     {
         return (bool) $value;
     }
+
+    /**
+     * {@inheritDoc}
+     */
+    public static function fromDatabase($value, array $params = []): bool
+    {
+        if (! is_string($value)) {
+            self::invalidTypeValueError($value);
+        }
+
+        return (bool) $value;
+    }
 }
diff --git a/system/Entity/Cast/CSVCast.php b/system/Entity/Cast/CSVCast.php
index ba2414273543..f4cc2c9df632 100644
--- a/system/Entity/Cast/CSVCast.php
+++ b/system/Entity/Cast/CSVCast.php
@@ -19,16 +19,24 @@ class CSVCast extends BaseCast
     /**
      * {@inheritDoc}
      */
-    public static function get($value, array $params = []): array
+    public static function fromDatabase($value, array $params = []): array
     {
+        if (! is_string($value)) {
+            self::invalidTypeValueError($value);
+        }
+
         return explode(',', $value);
     }
 
     /**
      * {@inheritDoc}
      */
-    public static function set($value, array $params = []): string
+    public static function toDatabase($value, array $params = []): string
     {
+        if (! is_array($value)) {
+            self::invalidTypeValueError($value);
+        }
+
         return implode(',', $value);
     }
 }
diff --git a/system/Entity/Cast/CastInterface.php b/system/Entity/Cast/CastInterface.php
index c1dcf1c40ead..fde3c8b03413 100644
--- a/system/Entity/Cast/CastInterface.php
+++ b/system/Entity/Cast/CastInterface.php
@@ -13,11 +13,15 @@
 
 /**
  * Interface CastInterface
+ *
+ * [App Code] --- set() --> [Entity] --- toDatabase() ---> [Database]
+ * [App Code] <-- get() --- [Entity] <-- fromDatabase() -- [Database]
  */
 interface CastInterface
 {
     /**
-     * Get
+     * Returns value when getting the Entity property.
+     * This method is normally returns the value as it is.
      *
      * @param array|bool|float|int|object|string|null $value  Data
      * @param array                                   $params Additional param
@@ -27,7 +31,7 @@ interface CastInterface
     public static function get($value, array $params = []);
 
     /**
-     * Set
+     * Returns value for the Entity property when setting the Entity property.
      *
      * @param array|bool|float|int|object|string|null $value  Data
      * @param array                                   $params Additional param
@@ -35,4 +39,24 @@ public static function get($value, array $params = []);
      * @return array|bool|float|int|object|string|null
      */
     public static function set($value, array $params = []);
+
+    /**
+     * Takes the Entity property value, returns its value for database.
+     *
+     * @param array|bool|float|int|object|string|null $value  Data
+     * @param array                                   $params Additional param
+     *
+     * @return bool|float|int|string|null
+     */
+    public static function toDatabase($value, array $params = []);
+
+    /**
+     * Takes value from database, returns its value for the Entity property.
+     *
+     * @param bool|float|int|string|null $value  Data
+     * @param array                      $params Additional param
+     *
+     * @return array|bool|float|int|object|string|null
+     */
+    public static function fromDatabase($value, array $params = []);
 }
diff --git a/system/Entity/Cast/DatetimeCast.php b/system/Entity/Cast/DatetimeCast.php
index 423300cdae6f..af4691c9a3b4 100644
--- a/system/Entity/Cast/DatetimeCast.php
+++ b/system/Entity/Cast/DatetimeCast.php
@@ -27,7 +27,7 @@ class DatetimeCast extends BaseCast
      *
      * @throws Exception
      */
-    public static function get($value, array $params = [])
+    public static function set($value, array $params = [])
     {
         if ($value instanceof Time) {
             return $value;
@@ -45,6 +45,34 @@ public static function get($value, array $params = [])
             return Time::parse($value);
         }
 
-        return $value;
+        self::invalidTypeValueError($value);
+    }
+
+    /**
+     * {@inheritDoc}
+     *
+     * @return Time
+     *
+     * @throws Exception
+     */
+    public static function fromDatabase($value, array $params = [])
+    {
+        if (is_string($value)) {
+            return Time::parse($value);
+        }
+
+        self::invalidTypeValueError($value);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public static function toDatabase($value, array $params = []): string
+    {
+        if (! $value instanceof Time) {
+            self::invalidTypeValueError($value);
+        }
+
+        return (string) $value;
     }
 }
diff --git a/system/Entity/Cast/FloatCast.php b/system/Entity/Cast/FloatCast.php
index 78f87570f32c..57e22dac58a3 100644
--- a/system/Entity/Cast/FloatCast.php
+++ b/system/Entity/Cast/FloatCast.php
@@ -19,7 +19,15 @@ class FloatCast extends BaseCast
     /**
      * {@inheritDoc}
      */
-    public static function get($value, array $params = []): float
+    public static function set($value, array $params = []): float
+    {
+        return (float) $value;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public static function fromDatabase($value, array $params = []): float
     {
         return (float) $value;
     }
diff --git a/system/Entity/Cast/IntBoolCast.php b/system/Entity/Cast/IntBoolCast.php
index ce572d9eba4e..8533b8b1e6f6 100644
--- a/system/Entity/Cast/IntBoolCast.php
+++ b/system/Entity/Cast/IntBoolCast.php
@@ -19,18 +19,38 @@
 final class IntBoolCast extends BaseCast
 {
     /**
-     * @param int $value
+     * {@inheritDoc}
      */
-    public static function get($value, array $params = []): bool
+    public static function set($value, array $params = []): bool
     {
+        if (! is_bool($value) && ! is_int($value) && ! is_string($value)) {
+            self::invalidTypeValueError($value);
+        }
+
         return (bool) $value;
     }
 
     /**
-     * @param bool|int|string $value
+     * {@inheritDoc}
      */
-    public static function set($value, array $params = []): int
+    public static function fromDatabase($value, array $params = []): bool
     {
+        if (! is_int($value) && ! is_string($value)) {
+            self::invalidTypeValueError($value);
+        }
+
+        return (bool) $value;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public static function toDatabase($value, array $params = []): int
+    {
+        if (! is_bool($value)) {
+            self::invalidTypeValueError($value);
+        }
+
         return (int) $value;
     }
 }
diff --git a/system/Entity/Cast/IntegerCast.php b/system/Entity/Cast/IntegerCast.php
index b9357d7ed49b..b7ce069fa3c6 100644
--- a/system/Entity/Cast/IntegerCast.php
+++ b/system/Entity/Cast/IntegerCast.php
@@ -19,8 +19,20 @@ class IntegerCast extends BaseCast
     /**
      * {@inheritDoc}
      */
-    public static function get($value, array $params = []): int
+    public static function set($value, array $params = []): int
     {
         return (int) $value;
     }
+
+    /**
+     * {@inheritDoc}
+     */
+    public static function fromDatabase($value, array $params = []): int
+    {
+        if (! is_string($value) && ! is_int($value)) {
+            self::invalidTypeValueError($value);
+        }
+
+        return (int) $value;
+    }
 }
diff --git a/system/Entity/Cast/JsonCast.php b/system/Entity/Cast/JsonCast.php
index 534631be6167..a23ad69e2131 100644
--- a/system/Entity/Cast/JsonCast.php
+++ b/system/Entity/Cast/JsonCast.php
@@ -23,16 +23,20 @@ class JsonCast extends BaseCast
     /**
      * {@inheritDoc}
      */
-    public static function get($value, array $params = [])
+    public static function fromDatabase($value, array $params = [])
     {
+        if (! is_string($value)) {
+            self::invalidTypeValueError($value);
+        }
+
         $associative = in_array('array', $params, true);
 
-        $tmp = $value !== null ? ($associative ? [] : new stdClass()) : null;
+        // @TODO Can $value be null?
+        $tmp = ($associative ? [] : new stdClass());
 
         if (function_exists('json_decode')
             && (
-                (is_string($value)
-                    && strlen($value) > 1
+                (strlen($value) > 1
                     && in_array($value[0], ['[', '{', '"'], true))
                 || is_numeric($value)
             )
@@ -49,8 +53,10 @@ public static function get($value, array $params = [])
 
     /**
      * {@inheritDoc}
+     *
+     * @param mixed $value
      */
-    public static function set($value, array $params = []): string
+    public static function toDatabase($value, array $params = []): string
     {
         if (function_exists('json_encode')) {
             try {
diff --git a/system/Entity/Cast/ObjectCast.php b/system/Entity/Cast/ObjectCast.php
index 0a22ed8a4a36..d533601ee216 100644
--- a/system/Entity/Cast/ObjectCast.php
+++ b/system/Entity/Cast/ObjectCast.php
@@ -11,6 +11,8 @@
 
 namespace CodeIgniter\Entity\Cast;
 
+use stdClass;
+
 /**
  * Class ObjectCast
  */
@@ -19,8 +21,42 @@ class ObjectCast extends BaseCast
     /**
      * {@inheritDoc}
      */
-    public static function get($value, array $params = []): object
+    public static function set($value, array $params = []): object
     {
+        if (! is_array($value)) {
+            self::invalidTypeValueError($value);
+        }
+
         return (object) $value;
     }
+
+    /**
+     * {@inheritDoc}
+     */
+    public static function toDatabase($value, array $params = [])
+    {
+        if (! $value instanceof stdClass) {
+            self::invalidTypeValueError($value);
+        }
+
+        // @TODO How to implement?
+        return serialize((array) $value);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public static function fromDatabase($value, array $params = []): object
+    {
+        if (! is_string($value)) {
+            self::invalidTypeValueError($value);
+        }
+
+        // @TODO How to implement?
+        if ((strpos($value, 'a:') === 0)) {
+            return (object) unserialize($value, ['allowed_classes' => false]);
+        }
+
+        self::invalidTypeValueError($value);
+    }
 }
diff --git a/system/Entity/Cast/StringCast.php b/system/Entity/Cast/StringCast.php
index 974567ccb62a..c8939bda2c19 100644
--- a/system/Entity/Cast/StringCast.php
+++ b/system/Entity/Cast/StringCast.php
@@ -19,7 +19,7 @@ class StringCast extends BaseCast
     /**
      * {@inheritDoc}
      */
-    public static function get($value, array $params = []): string
+    public static function set($value, array $params = []): string
     {
         return (string) $value;
     }
diff --git a/system/Entity/Cast/TimestampCast.php b/system/Entity/Cast/TimestampCast.php
index f9669d592eb7..538c7b39125c 100644
--- a/system/Entity/Cast/TimestampCast.php
+++ b/system/Entity/Cast/TimestampCast.php
@@ -20,9 +20,15 @@ class TimestampCast extends BaseCast
 {
     /**
      * {@inheritDoc}
+     *
+     * @return int
      */
-    public static function get($value, array $params = [])
+    public static function set($value, array $params = [])
     {
+        if (! is_string($value)) {
+            self::invalidTypeValueError($value);
+        }
+
         $value = strtotime($value);
 
         if ($value === false) {
diff --git a/system/Entity/Cast/URICast.php b/system/Entity/Cast/URICast.php
index bb49e7454ddf..36f0b59bd893 100644
--- a/system/Entity/Cast/URICast.php
+++ b/system/Entity/Cast/URICast.php
@@ -21,8 +21,16 @@ class URICast extends BaseCast
     /**
      * {@inheritDoc}
      */
-    public static function get($value, array $params = []): URI
+    public static function set($value, array $params = []): URI
     {
-        return $value instanceof URI ? $value : new URI($value);
+        if ($value instanceof URI) {
+            return $value;
+        }
+
+        if (! is_string($value)) {
+            self::invalidTypeValueError($value);
+        }
+
+        return new URI($value);
     }
 }
diff --git a/system/Entity/Entity.php b/system/Entity/Entity.php
index 65898c012dc9..460717eeb6ca 100644
--- a/system/Entity/Entity.php
+++ b/system/Entity/Entity.php
@@ -45,7 +45,7 @@ class Entity implements JsonSerializable
      *
      * Example:
      *  $datamap = [
-     *      'class_property_name' => 'db_column_name'
+     *      class_property_alias => db_column_name
      *  ];
      *
      * @var array<string, string>
@@ -103,23 +103,26 @@ class Entity implements JsonSerializable
     ];
 
     /**
-     * Holds the current values of all class vars.
+     * Holds the current values of all class properties.
+     * The values are PHP representation, not the raw values from database.
      *
-     * @var array
+     * @var array<string, mixed>
      */
-    protected $attributes = [];
+    protected $attributes = [
+        // db_column_name => PHP_value
+    ];
 
     /**
-     * Holds original copies of all class vars so we can determine
+     * Holds original copies of all attributes, so we can determine
      * what's actually been changed and not accidentally write
      * nulls where we shouldn't.
      *
-     * @var array
+     * @var array<string, mixed>
      */
     protected $original = [];
 
     /**
-     * Holds info whenever properties have to be casted
+     * Holds info whenever properties have to be cast.
      */
     private bool $_cast = true;
 
@@ -158,7 +161,7 @@ public function fill(?array $data = null)
     /**
      * General method that will return all public and protected values
      * of this entity as an array. All values are accessed through the
-     * __get() magic method so will have any casts, etc applied to them.
+     * __get() magic method so will have any casts, etc. applied to them.
      *
      * @param bool $onlyChanged If true, only return values that have changed since object creation
      * @param bool $cast        If true, properties will be cast.
@@ -201,29 +204,54 @@ public function toArray(bool $onlyChanged = false, bool $cast = true, bool $recu
     }
 
     /**
-     * Returns the raw values of the current attributes.
+     * Returns the values for database of the current attributes.
      *
      * @param bool $onlyChanged If true, only return values that have changed since object creation
      * @param bool $recursive   If true, inner entities will be cast as array as well.
+     *
+     * @deprecated 4.5.0 Use toDatabase() instead.
      */
     public function toRawArray(bool $onlyChanged = false, bool $recursive = false): array
+    {
+        return $this->toDatabase($onlyChanged, $recursive);
+    }
+
+    /**
+     * Returns the values for database of the current attributes.
+     *
+     * @param bool $onlyChanged If true, only return values that have changed since object creation
+     * @param bool $recursive   If true, inner entities will be cast as array as well.
+     */
+    public function toDatabase(bool $onlyChanged = false, bool $recursive = false): array
     {
         $return = [];
 
         if (! $onlyChanged) {
+            $data = $this->attributes;
+
+            // Cast values
+            if ($this->_cast) {
+                foreach (array_keys($this->casts) as $field) {
+                    if (isset($data[$field])) {
+                        $data[$field] = $this->castAs($data[$field], $field, 'toDatabase');
+                    }
+                }
+            }
+
             if ($recursive) {
                 return array_map(static function ($value) use ($onlyChanged, $recursive) {
                     if ($value instanceof self) {
-                        $value = $value->toRawArray($onlyChanged, $recursive);
-                    } elseif (is_callable([$value, 'toRawArray'])) {
-                        $value = $value->toRawArray();
+                        $value = $value->toDatabase($onlyChanged, $recursive);
+                    } elseif (is_callable([$value, 'toDatabase'])) {
+                        // @TODO Should define Interface or Class.
+                        $value = $value->toDatabase();
                     }
 
                     return $value;
-                }, $this->attributes);
+                }, $data);
             }
 
-            return $this->attributes;
+            return $data;
         }
 
         foreach ($this->attributes as $key => $value) {
@@ -231,11 +259,17 @@ public function toRawArray(bool $onlyChanged = false, bool $recursive = false):
                 continue;
             }
 
+            // Cast values
+            if ($this->_cast && isset($this->casts[$key])) {
+                $value = $this->castAs($value, $key, 'toDatabase');
+            }
+
             if ($recursive) {
                 if ($value instanceof self) {
-                    $value = $value->toRawArray($onlyChanged, $recursive);
-                } elseif (is_callable([$value, 'toRawArray'])) {
-                    $value = $value->toRawArray();
+                    $value = $value->toDatabase($onlyChanged, $recursive);
+                } elseif (is_callable([$value, 'toDatabase'])) {
+                    // @TODO Should define Interface or Class.
+                    $value = $value->toDatabase();
                 }
             }
 
@@ -290,6 +324,8 @@ public function hasChanged(?string $key = null): bool
      * Set raw data array without any mutations
      *
      * @return $this
+     *
+     * @deprecated 4.5.0 No longer used. `fromDatabase()` is used.
      */
     public function injectRawData(array $data)
     {
@@ -300,6 +336,35 @@ public function injectRawData(array $data)
         return $this;
     }
 
+    /**
+     * Set data from database
+     *
+     * @return $this
+     */
+    public function fromDatabase(array $data)
+    {
+        // Mutate dates
+        foreach ($this->dates as $field) {
+            if (isset($data[$field])) {
+                $data[$field] = $this->mutateDate($data[$field]);
+            }
+        }
+
+        // Cast values
+        if ($this->_cast) {
+            foreach (array_keys($this->casts) as $field) {
+                if (isset($data[$field])) {
+                    $data[$field] = $this->castAs($data[$field], $field, 'fromDatabase');
+                }
+            }
+        }
+
+        $this->attributes = $data;
+        $this->syncOriginal();
+
+        return $this;
+    }
+
     /**
      * Set raw data array without any mutations
      *
@@ -335,15 +400,19 @@ protected function mapProperty(string $key)
      * Converts the given string|timestamp|DateTime|Time instance
      * into the "CodeIgniter\I18n\Time" object.
      *
-     * @param DateTime|float|int|string|Time $value
+     * @param DateTime|float|int|string|Time|null $value
      *
-     * @return Time
+     * @return Time|null
      *
      * @throws Exception
      */
     protected function mutateDate($value)
     {
-        return DatetimeCast::get($value);
+        if ($value === null) {
+            return null;
+        }
+
+        return DatetimeCast::set($value);
     }
 
     /**
@@ -353,7 +422,8 @@ protected function mutateDate($value)
      *
      * @param bool|float|int|string|null $value     Attribute value
      * @param string                     $attribute Attribute name
-     * @param string                     $method    Allowed to "get" and "set"
+     * @param string                     $method    Method name to run in the cast handler
+     * @phpstan-param 'get'|'set'|'toDatabase'|'fromDatabase' $method
      *
      * @return array|bool|float|int|object|string|null
      *
@@ -383,7 +453,8 @@ protected function castAs($value, string $attribute, string $method = 'get')
         // json-array type, we transform the required one.
         $type = $type === 'json-array' ? 'json[array]' : $type;
 
-        if (! in_array($method, ['get', 'set'], true)) {
+        if (! in_array($method, ['get', 'set', 'toDatabase', 'fromDatabase'], true)) {
+            /** @psalm-suppress NoValue */
             throw CastException::forInvalidMethod($method);
         }
 
@@ -466,7 +537,9 @@ public function __set(string $key, $value = null)
             $value = $this->mutateDate($value);
         }
 
-        $value = $this->castAs($value, $dbColumn, 'set');
+        if ($this->_cast) {
+            $value = $this->castAs($value, $dbColumn, 'set');
+        }
 
         // if a setter method exists for this key, use that method to
         // insert this value. should be outside $isNullable check,
diff --git a/tests/_support/Entity/Database/Migrations/2023-09-29-103000_CreateUsersTable.php b/tests/_support/Entity/Database/Migrations/2023-09-29-103000_CreateUsersTable.php
new file mode 100644
index 000000000000..a0c527519680
--- /dev/null
+++ b/tests/_support/Entity/Database/Migrations/2023-09-29-103000_CreateUsersTable.php
@@ -0,0 +1,38 @@
+<?php
+
+/**
+ * This file is part of CodeIgniter 4 framework.
+ *
+ * (c) CodeIgniter Foundation <admin@codeigniter.com>
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+namespace Tests\Support\Entity\Database\Migrations;
+
+use CodeIgniter\Database\Migration;
+
+class CreateUsersTable extends Migration
+{
+    public function up(): void
+    {
+        $this->forge->addField([
+            'id'         => ['type' => 'int', 'constraint' => 11, 'unsigned' => true, 'auto_increment' => true],
+            'username'   => ['type' => 'varchar', 'constraint' => 30, 'null' => true],
+            'active'     => ['type' => 'tinyint', 'constraint' => 1, 'null' => 0, 'default' => 0],
+            'memo'       => ['type' => 'text', 'null' => true],
+            'created_at' => ['type' => 'datetime', 'null' => true],
+            'updated_at' => ['type' => 'datetime', 'null' => true],
+            'deleted_at' => ['type' => 'datetime', 'null' => true],
+        ]);
+        $this->forge->addPrimaryKey('id');
+        $this->forge->addUniqueKey('username');
+        $this->forge->createTable('users');
+    }
+
+    public function down(): void
+    {
+        $this->forge->dropTable('users');
+    }
+}
diff --git a/tests/system/Entity/EntityLiveTest.php b/tests/system/Entity/EntityLiveTest.php
new file mode 100644
index 000000000000..3e76f226238e
--- /dev/null
+++ b/tests/system/Entity/EntityLiveTest.php
@@ -0,0 +1,110 @@
+<?php
+
+/**
+ * This file is part of CodeIgniter 4 framework.
+ *
+ * (c) CodeIgniter Foundation <admin@codeigniter.com>
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+namespace CodeIgniter\Entity;
+
+use CodeIgniter\I18n\Time;
+use CodeIgniter\Model;
+use CodeIgniter\Test\CIUnitTestCase;
+use CodeIgniter\Test\DatabaseTestTrait;
+use Config\Services;
+use stdClass;
+
+/**
+ * @internal
+ *
+ * @group DatabaseLive
+ */
+final class EntityLiveTest extends CIUnitTestCase
+{
+    use DatabaseTestTrait;
+
+    protected $namespace = 'Tests\Support\Entity';
+
+    protected function setUp(): void
+    {
+        $this->setUpMethods[] = 'setUpAddNamespace';
+
+        parent::setUp();
+    }
+
+    protected function setUpAddNamespace(): void
+    {
+        Services::autoloader()->addNamespace(
+            'Tests\Support\Entity',
+            SUPPORTPATH . 'Entity'
+        );
+    }
+
+    protected function tearDown(): void
+    {
+        parent::tearDown();
+
+        $this->regressDatabase();
+    }
+
+    public function testEntityReturnsValuesWithCorrectTypes()
+    {
+        $entity = new class () extends Entity {
+            protected $casts = [
+                'id'     => 'int',
+                'active' => 'int-bool',
+                'memo'   => 'json',
+            ];
+        };
+        $model = new class () extends Model {
+            protected $table         = 'users';
+            protected $allowedFields = [
+                'username', 'active', 'memo',
+            ];
+            protected $useTimestamps = true;
+        };
+        $entity->fill(['username' => 'johnsmith', 'active' => false, 'memo' => ['foo', 'bar']]);
+        $model->save($entity);
+
+        $user = $model->asObject(get_class($entity))->find(1);
+
+        $this->assertSame(1, $user->id);
+        $this->assertSame('johnsmith', $user->username);
+        $this->assertFalse($user->active);
+        $this->assertSame(['foo', 'bar'], $user->memo);
+        $this->assertInstanceOf(Time::class, $user->created_at);
+        $this->assertInstanceOf(Time::class, $user->updated_at);
+    }
+
+    /**
+     * @TODO Fix the object cast handler implementation.
+     */
+    public function testCastObject(): void
+    {
+        $entity = new class () extends Entity {
+            protected $casts = [
+                'id'     => 'int',
+                'active' => 'int-bool',
+                'memo'   => 'object',
+            ];
+        };
+        $model = new class () extends Model {
+            protected $table         = 'users';
+            protected $allowedFields = [
+                'username', 'active', 'memo',
+            ];
+            protected $useTimestamps = true;
+        };
+        $entity->fill(['username' => 'johnsmith', 'active' => false, 'memo' => ['foo', 'bar']]);
+        $model->save($entity);
+
+        $user = $model->asObject(get_class($entity))->find(1);
+
+        $this->assertInstanceOf(stdClass::class, $user->memo);
+        $this->assertSame(['foo', 'bar'], (array) $user->memo);
+    }
+}
diff --git a/tests/system/Entity/EntityTest.php b/tests/system/Entity/EntityTest.php
index dadea32b5680..6863c19df199 100644
--- a/tests/system/Entity/EntityTest.php
+++ b/tests/system/Entity/EntityTest.php
@@ -61,7 +61,7 @@ public function testSetArrayToPropertyNamedAttributes()
                 2 => 3,
             ],
         ];
-        $this->assertSame($expected, $entity->toRawArray());
+        $this->assertSame($expected, $entity->toDatabase());
     }
 
     public function testSimpleSetAndGet(): void
@@ -347,23 +347,31 @@ public function testCastIntBool(): void
             ];
         };
 
-        $entity->setAttributes(['active' => '1']);
+        $entity->active = '1';
 
         $this->assertTrue($entity->active);
 
-        $entity->setAttributes(['active' => '0']);
+        $entity->active = '0';
+
+        $this->assertFalse($entity->active);
+
+        $entity->active = 1;
+
+        $this->assertTrue($entity->active);
+
+        $entity->active = 0;
 
         $this->assertFalse($entity->active);
 
         $entity->active = true;
 
         $this->assertTrue($entity->active);
-        $this->assertSame(['active' => 1], $entity->toRawArray());
+        $this->assertSame(['active' => 1], $entity->toDatabase());
 
         $entity->active = false;
 
         $this->assertFalse($entity->active);
-        $this->assertSame(['active' => 0], $entity->toRawArray());
+        $this->assertSame(['active' => 0], $entity->toDatabase());
     }
 
     public function testCastFloat(): void
@@ -423,11 +431,12 @@ public function testCastBoolean(): void
 
     public function testCastCSV(): void
     {
-        $entity          = $this->getCastEntity();
+        $entity = $this->getCastEntity();
+
         $data            = ['foo', 'bar', 'bam'];
         $entity->twelfth = $data;
 
-        $result = $entity->toRawArray();
+        $result = $entity->toDatabase();
 
         $this->assertIsString($result['twelfth']);
         $this->assertSame('foo,bar,bam', $result['twelfth']);
@@ -486,8 +495,9 @@ public function testCastArray(): void
 
         $entity->seventh = ['foo' => 'bar'];
 
-        $check = $this->getPrivateProperty($entity, 'attributes')['seventh'];
-        $this->assertSame(serialize(['foo' => 'bar']), $check);
+        $result = $entity->toDatabase();
+
+        $this->assertSame(serialize(['foo' => 'bar']), $result['seventh']);
         $this->assertSame(['foo' => 'bar'], $entity->seventh);
     }
 
@@ -497,11 +507,12 @@ public function testCastArrayByStringSerialize(): void
 
         $entity->seventh = 'foobar';
 
+        $result = $entity->toDatabase();
+
         // Should be a serialized string now...
-        $check = $this->getPrivateProperty($entity, 'attributes')['seventh'];
-        $this->assertSame(serialize('foobar'), $check);
+        $this->assertSame(serialize('foobar'), $result['seventh']);
 
-        $this->assertSame(['foobar'], $entity->seventh);
+        $this->assertSame('foobar', $entity->seventh);
     }
 
     public function testCastArrayByArraySerialize(): void
@@ -510,9 +521,10 @@ public function testCastArrayByArraySerialize(): void
 
         $entity->seventh = ['foo' => 'bar'];
 
+        $result = $entity->toDatabase();
+
         // Should be a serialized string now...
-        $check = $this->getPrivateProperty($entity, 'attributes')['seventh'];
-        $this->assertSame(serialize(['foo' => 'bar']), $check);
+        $this->assertSame(serialize(['foo' => 'bar']), $result['seventh']);
 
         $this->assertSame(['foo' => 'bar'], $entity->seventh);
     }
@@ -524,9 +536,10 @@ public function testCastArrayByFill(): void
         $data = ['seventh' => [1, 2, 3]];
         $entity->fill($data);
 
+        $result = $entity->toDatabase();
+
         // Check if serialiazed
-        $check = $this->getPrivateProperty($entity, 'attributes')['seventh'];
-        $this->assertSame(serialize([1, 2, 3]), $check);
+        $this->assertSame(serialize([1, 2, 3]), $result['seventh']);
         // Check if unserialized
         $this->assertSame([1, 2, 3], $entity->seventh);
     }
@@ -536,9 +549,10 @@ public function testCastArrayByConstructor(): void
         $data   = ['seventh' => [1, 2, 3]];
         $entity = $this->getCastEntity($data);
 
+        $result = $entity->toDatabase();
+
         // Check if serialiazed
-        $check = $this->getPrivateProperty($entity, 'attributes')['seventh'];
-        $this->assertSame(serialize([1, 2, 3]), $check);
+        $this->assertSame(serialize([1, 2, 3]), $result['seventh']);
         // Check if unserialized
         $this->assertSame([1, 2, 3], $entity->seventh);
     }
@@ -584,12 +598,12 @@ public function testCastAsJSON(): void
 
         $entity->tenth = ['foo' => 'bar'];
 
+        $result = $entity->toDatabase();
+
         // Should be a JSON-encoded string now...
-        $check = $this->getPrivateProperty($entity, 'attributes')['tenth'];
-        $this->assertSame('{"foo":"bar"}', $check);
+        $this->assertSame('{"foo":"bar"}', $result['tenth']);
 
-        $this->assertInstanceOf('stdClass', $entity->tenth);
-        $this->assertSame(['foo' => 'bar'], (array) $entity->tenth);
+        $this->assertSame(['foo' => 'bar'], $entity->tenth);
     }
 
     public function testCastAsJSONArray(): void
@@ -599,9 +613,10 @@ public function testCastAsJSONArray(): void
         $data             = ['Sun', 'Mon', 'Tue'];
         $entity->eleventh = $data;
 
+        $result = $entity->toDatabase();
+
         // Should be a JSON-encoded string now...
-        $check = $this->getPrivateProperty($entity, 'attributes')['eleventh'];
-        $this->assertSame('["Sun","Mon","Tue"]', $check);
+        $this->assertSame('["Sun","Mon","Tue"]', $result['eleventh']);
 
         $this->assertSame($data, $entity->eleventh);
     }
@@ -613,9 +628,10 @@ public function testCastAsJsonByFill(): void
         $data = ['eleventh' => [1, 2, 3]];
         $entity->fill($data);
 
+        $result = $entity->toDatabase();
+
         // Check if serialiazed
-        $check = $this->getPrivateProperty($entity, 'attributes')['eleventh'];
-        $this->assertSame(json_encode([1, 2, 3]), $check);
+        $this->assertSame(json_encode([1, 2, 3]), $result['eleventh']);
         // Check if unserialized
         $this->assertSame([1, 2, 3], $entity->eleventh);
     }
@@ -625,9 +641,10 @@ public function testCastAsJsonByConstructor(): void
         $data   = ['eleventh' => [1, 2, 3]];
         $entity = $this->getCastEntity($data);
 
+        $result = $entity->toDatabase();
+
         // Check if serialiazed
-        $check = $this->getPrivateProperty($entity, 'attributes')['eleventh'];
-        $this->assertSame(json_encode([1, 2, 3]), $check);
+        $this->assertSame(json_encode([1, 2, 3]), $result['eleventh']);
         // Check if unserialized
         $this->assertSame([1, 2, 3], $entity->eleventh);
     }
@@ -651,6 +668,8 @@ public function testCastAsJSONErrorDepth(): void
         }
         $current       = $value;
         $entity->tenth = $array;
+
+        $entity->toDatabase();
     }
 
     public function testCastAsJSONErrorUTF8(): void
@@ -661,6 +680,8 @@ public function testCastAsJSONErrorUTF8(): void
         $entity = $this->getCastEntity();
 
         $entity->tenth = "\xB1\x31";
+
+        $entity->toDatabase();
     }
 
     /**
@@ -675,7 +696,7 @@ public function testCastAsJSONSyntaxError(): void
             $entity                 = new Entity();
             $entity->casts['dummy'] = 'json[array]';
 
-            return $entity->castAs($value, 'dummy');
+            return $entity->castAs($value, 'dummy', 'fromDatabase');
         }, null, Entity::class))('{ this is bad string');
     }
 
@@ -692,7 +713,7 @@ public function testCastAsJSONAnotherErrorDepth(): void
             $entity                 = new Entity();
             $entity->casts['dummy'] = 'json[array]';
 
-            return $entity->castAs($value, 'dummy');
+            return $entity->castAs($value, 'dummy', 'fromDatabase');
         }, null, Entity::class))($string);
     }
 
@@ -709,7 +730,7 @@ public function testCastAsJSONControlCharCheck(): void
             $entity                 = new Entity();
             $entity->casts['dummy'] = 'json[array]';
 
-            return $entity->castAs($value, 'dummy');
+            return $entity->castAs($value, 'dummy', 'fromDatabase');
         }, null, Entity::class))($string);
     }
 
@@ -726,22 +747,24 @@ public function testCastAsJSONStateMismatch(): void
             $entity                 = new Entity();
             $entity->casts['dummy'] = 'json[array]';
 
-            return $entity->castAs($value, 'dummy');
+            return $entity->castAs($value, 'dummy', 'fromDatabase');
         }, null, Entity::class))($string);
     }
 
     public function testCastSetter(): void
     {
-        $string        = '321 String with numbers 123';
-        $entity        = $this->getCastEntity();
-        $entity->first = $string;
+        $entity = $this->getCastEntity();
 
         $entity->cast(false);
+        $string        = '321 String with numbers 123';
+        $entity->first = $string;
 
         $this->assertIsString($entity->first);
         $this->assertSame($string, $entity->first);
 
         $entity->cast(true);
+        $string        = '321 String with numbers 123';
+        $entity->first = $string;
 
         $this->assertIsInt($entity->first);
         $this->assertSame((int) $string, $entity->first);
@@ -863,7 +886,7 @@ public function testDataMappingIssetSwapped(): void
         $this->assertTrue($isset);
         $this->assertSame('222', $entity->bar);
 
-        $result = $entity->toRawArray();
+        $result = $entity->toDatabase();
 
         $this->assertSame([
             'foo' => '222',
@@ -916,11 +939,11 @@ public function testAsArrayOnlyChanged(): void
         ], $result);
     }
 
-    public function testToRawArray(): void
+    public function testToDatabase(): void
     {
         $entity = $this->getEntity();
 
-        $result = $entity->toRawArray();
+        $result = $entity->toDatabase();
 
         $this->assertSame([
             'foo'        => null,
@@ -930,12 +953,12 @@ public function testToRawArray(): void
         ], $result);
     }
 
-    public function testToRawArrayRecursive(): void
+    public function testToDatabaseRecursive(): void
     {
         $entity         = $this->getEntity();
         $entity->entity = $this->getEntity();
 
-        $result = $entity->toRawArray(false, true);
+        $result = $entity->toDatabase(false, true);
 
         $this->assertSame([
             'foo'        => null,
@@ -951,12 +974,12 @@ public function testToRawArrayRecursive(): void
         ], $result);
     }
 
-    public function testToRawArrayOnlyChanged(): void
+    public function testToDatabaseOnlyChanged(): void
     {
         $entity      = $this->getEntity();
         $entity->bar = 'foo';
 
-        $result = $entity->toRawArray(true);
+        $result = $entity->toDatabase(true);
 
         $this->assertSame([
             'bar' => 'bar:foo',
@@ -1285,16 +1308,16 @@ protected function getCastNullableEntity()
         return new class () extends Entity {
             protected $attributes = [
                 'string_null'           => null,
-                'string_empty'          => null,
+                'string_empty'          => '',
                 'integer_null'          => null,
-                'integer_0'             => null,
+                'integer_0'             => 0,
                 'string_value_not_null' => 'value',
             ];
             protected $_original = [
                 'string_null'           => null,
-                'string_empty'          => null,
+                'string_empty'          => '',
                 'integer_null'          => null,
-                'integer_0'             => null,
+                'integer_0'             => 0,
                 'string_value_not_null' => 'value',
             ];
 
@@ -1339,4 +1362,49 @@ protected function getCustomCastEntity()
             ];
         };
     }
+
+    /**
+     * @see https://github.com/codeigniter4/CodeIgniter4/issues/5905
+     */
+    public function testHasChangedCastsItem()
+    {
+        $data = [
+            'id'   => '1',
+            'name' => 'John',
+            'age'  => '35',
+        ];
+        $entity = new class ($data) extends Entity {
+            protected $casts = [
+                'id'   => 'integer',
+                'name' => 'string',
+                'age'  => 'integer',
+            ];
+        };
+        $entity->syncOriginal();
+
+        $entity->age = 35;
+
+        $this->assertFalse($entity->hasChanged('age'));
+    }
+
+    public function testHasChangedCastsWholeEntity()
+    {
+        $data = [
+            'id'   => '1',
+            'name' => 'John',
+            'age'  => '35',
+        ];
+        $entity = new class ($data) extends Entity {
+            protected $casts = [
+                'id'   => 'integer',
+                'name' => 'string',
+                'age'  => 'integer',
+            ];
+        };
+        $entity->syncOriginal();
+
+        $entity->age = 35;
+
+        $this->assertFalse($entity->hasChanged());
+    }
 }