diff --git a/gringotts-web/src/main/java/com/eshore/gringotts/web/domain/resource/entity/DataResource.java b/gringotts-web/src/main/java/com/eshore/gringotts/web/domain/resource/entity/DataResource.java
index 7b6c68c..cedb9fb 100644
--- a/gringotts-web/src/main/java/com/eshore/gringotts/web/domain/resource/entity/DataResource.java
+++ b/gringotts-web/src/main/java/com/eshore/gringotts/web/domain/resource/entity/DataResource.java
@@ -46,15 +46,15 @@ public class DataResource extends SimpleEntity {
     @Column(nullable = false)
     private String name;
     private String description;
-    @OneToOne(cascade = CascadeType.DETACH, fetch = FetchType.LAZY)
-    @JoinColumn(nullable = false)
+    @OneToOne(cascade = CascadeType.REMOVE, fetch = FetchType.LAZY)
+    @JoinColumn(nullable = false, foreignKey = @ForeignKey(ConstraintMode.NO_CONSTRAINT))
     @ToString.Exclude
     private ResourceType type;
-    @OneToOne(cascade = CascadeType.DETACH, fetch = FetchType.LAZY)
-    @JoinColumn(nullable = false)
+    @OneToOne(cascade = CascadeType.REMOVE, fetch = FetchType.LAZY)
+    @JoinColumn(nullable = false, foreignKey = @ForeignKey(ConstraintMode.NO_CONSTRAINT))
     @ToString.Exclude
     private ResourceFormat format;
-    @OneToOne(cascade = CascadeType.DETACH, fetch = FetchType.LAZY)
+    @OneToOne(fetch = FetchType.LAZY)
     @JoinColumn(foreignKey = @ForeignKey(ConstraintMode.NO_CONSTRAINT))
     @ToString.Exclude
     private DataFile example;