diff --git a/api/resources/db/migration/V7__Update_constraints_cascade_delete.sql b/api/resources/db/migration/V7__Update_constraints_cascade_delete.sql
new file mode 100644
index 0000000..48bb1f5
--- /dev/null
+++ b/api/resources/db/migration/V7__Update_constraints_cascade_delete.sql
@@ -0,0 +1,19 @@
+-- ON DELETE -> CASCADE
+
+ALTER TABLE `Notes`
+    DROP CONSTRAINT `Notes_ibfk_1`;
+
+ALTER TABLE `Notes`
+    ADD FOREIGN KEY (`user_id`) REFERENCES `Users` (`id`) ON DELETE CASCADE ON UPDATE RESTRICT;
+
+ALTER TABLE `Chapters`
+    DROP CONSTRAINT `Chapters_ibfk_1`;
+
+ALTER TABLE `Chapters`
+    ADD FOREIGN KEY (`note_id`) REFERENCES `Notes` (`id`) ON DELETE CASCADE ON UPDATE RESTRICT;
+
+ALTER TABLE `Tags`
+    DROP CONSTRAINT `Tags_ibfk_1`;
+
+ALTER TABLE `Tags`
+    ADD FOREIGN KEY (`note_id`) REFERENCES `Notes` (`id`) ON DELETE CASCADE ON UPDATE RESTRICT;
\ No newline at end of file