diff --git a/tarantool/src/index.rs b/tarantool/src/index.rs
index 7327d162..938cdcc0 100644
--- a/tarantool/src/index.rs
+++ b/tarantool/src/index.rs
@@ -19,6 +19,7 @@ use crate::tuple::{AsTuple, Tuple, TupleBuffer};
 use crate::tuple_from_box_api;
 
 /// An index is a group of key values and pointers.
+#[derive(Debug, Clone)]
 pub struct Index {
     space_id: u32,
     index_id: u32,
@@ -151,7 +152,8 @@ pub enum IndexSequenceOption {
 }
 
 /// Type of index.
-#[derive(Copy, Clone, Debug, Serialize)]
+#[derive(Copy, Clone, Debug, Serialize, Deserialize)]
+#[serde(rename_all="lowercase")]
 pub enum IndexType {
     Hash,
     Tree,
@@ -160,7 +162,8 @@ pub enum IndexType {
 }
 
 /// Type of index part.
-#[derive(Copy, Clone, Debug, Serialize)]
+#[derive(Copy, Clone, Debug, Serialize, Deserialize)]
+#[serde(rename_all="lowercase")]
 pub enum IndexFieldType {
     Unsigned,
     String,
@@ -176,7 +179,7 @@ pub enum IndexFieldType {
 }
 
 /// Index part.
-#[derive(Serialize)]
+#[derive(Clone, Debug, Serialize, Deserialize)]
 pub struct IndexPart {
     pub field_index: u32,
     pub field_type: IndexFieldType,
diff --git a/tarantool/src/schema/space.rs b/tarantool/src/schema/space.rs
index 8417f3a1..8e9b723c 100644
--- a/tarantool/src/schema/space.rs
+++ b/tarantool/src/schema/space.rs
@@ -130,6 +130,9 @@ fn insert_new_space(
             let mut field_format = Map::<String, Value>::new();
             field_format.insert("name".to_string(), Value::String(ft.name.clone()));
             field_format.insert("type".to_string(), Value::String(ft.field_type.to_string()));
+            if let Some(is_nullable) = ft.is_nullable {
+                field_format.insert("is_nullable".to_string(), Value::Bool(is_nullable));
+            }
             space_format.push(Value::Object(field_format));
         }
     }
diff --git a/tarantool/src/space.rs b/tarantool/src/space.rs
index c6725933..6d646b7c 100644
--- a/tarantool/src/space.rs
+++ b/tarantool/src/space.rs
@@ -10,7 +10,7 @@ use std::fmt;
 use std::os::raw::c_char;
 
 use num_traits::ToPrimitive;
-use serde::{Serialize, Serializer};
+use serde::{Serialize, Serializer, Deserialize, Deserializer};
 use serde_json::{Map, Value};
 
 use crate::error::{Error, TarantoolError};
@@ -93,7 +93,8 @@ impl Into<Space> for SystemSpace {
 }
 
 /// Type of engine, used by space.
-#[derive(Copy, Clone, Debug)]
+#[derive(Copy, Clone, Debug, Deserialize, PartialEq)]
+#[serde(rename_all="lowercase")]
 pub enum SpaceEngineType {
     Memtx,
     Vinyl,
@@ -144,11 +145,12 @@ impl Default for SpaceCreateOptions {
     }
 }
 
-#[derive(Clone, Debug, Serialize)]
+#[derive(Clone, Debug, Serialize, Deserialize)]
 pub struct SpaceFieldFormat {
     pub name: String,
     #[serde(alias = "type")]
     pub field_type: SpaceFieldType,
+    pub is_nullable: Option<bool>,
 }
 
 impl SpaceFieldFormat {
@@ -156,11 +158,13 @@ impl SpaceFieldFormat {
         return SpaceFieldFormat {
             name: name.to_string(),
             field_type: ft,
+            is_nullable: None,
         };
     }
 }
 
-#[derive(Copy, Clone, Debug, Serialize)]
+#[derive(Copy, Clone, Debug, Serialize, Deserialize, PartialEq)]
+#[serde(rename_all="lowercase")]
 pub enum SpaceFieldType {
     Any,
     Unsigned,
@@ -217,6 +221,7 @@ pub struct Privilege {
 
 impl AsTuple for Privilege {}
 
+#[derive(Debug, Clone)]
 pub struct Space {
     id: u32,
 }