diff --git a/library/books.json b/library/books.json
index 7c56cc0..6a9e852 100644
--- a/library/books.json
+++ b/library/books.json
@@ -10,9 +10,37 @@
   "longTitle": "The Surgeon's Mate (Aubrey/Maturin)",
   "bookOfTheMonth": null,
   "tags": "writing style,travel,dystopian fiction",
-  "publisherId": 1352,
-  "bindingId": 6,
-  "languageId": 1
+  "publisher": [
+    {
+      "Id": 1,
+      "name": "pub1"
+    },
+    {
+      "Id": 2,
+      "name": "pub2"
+    }
+  ]
+  "binding": ["type1","type2","type3"],
+  "language": [
+    {
+      "id": 1,
+      "iso": "eng",
+      "name": "english"
+    },
+    {
+      "id": 2,
+      "iso": "hind",
+      "name": "hindi"
+    },
+  ]
+  "genre":["g1","g2","g3"]
+  "author":[
+    {
+      "id":1,
+      "name":"aut1",
+      "alias": ["alias1","alias2"]
+    }
+  ]
 },
 {
   "id": "1883577039",
@@ -317,4 +345,4 @@
   "publisherId": 766,
   "bindingId": 6,
   "languageId": 1
-}]
\ No newline at end of file
+}]