diff --git a/src/main/java/cryptosky/me/graphql/pricing/models/entities/CryptoPriceModel.java b/src/main/java/cryptosky/me/graphql/pricing/models/entities/CryptoPriceModel.java
index 55e4433..39fcd56 100644
--- a/src/main/java/cryptosky/me/graphql/pricing/models/entities/CryptoPriceModel.java
+++ b/src/main/java/cryptosky/me/graphql/pricing/models/entities/CryptoPriceModel.java
@@ -12,8 +12,8 @@ import java.time.LocalDateTime;
 public class CryptoPriceModel {
 
     @Id
-    @Column(name = "ID", nullable = false)
-    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Column(name = "ID", nullable = false, unique = true)
+    @GeneratedValue(strategy = GenerationType.AUTO)
     private int id;
 
     @Column(name = "timestamp", nullable = false)
diff --git a/src/main/resources/graphql/configQL.graphqls b/src/main/resources/graphql/configQL.graphqls
index c372e21..69a6752 100644
--- a/src/main/resources/graphql/configQL.graphqls
+++ b/src/main/resources/graphql/configQL.graphqls
@@ -37,5 +37,4 @@ type Query {
 type Mutation {
 	createBtc(createdDate: String!, type: String!, average_price: Float!, high_price: Float, low_price: Float, open_price: Float, close_price: Float, volume: Float):BtcPrice
 	createTweet(createdDate: String!, rawTweet: String!, sentimentScore: Float!, positiveScore: Float, neutralScore: Float, negativeScore: Float, compoundScore: Float!):tweetModel
-
 }
\ No newline at end of file