From 26768f40a5493131527f4bb6f725c2ee00aaa72c Mon Sep 17 00:00:00 2001
From: johnA1331 <53036378+johnA1331@users.noreply.github.com>
Date: Thu, 3 Jun 2021 22:41:19 +0800
Subject: [PATCH] Update README.md

---
 persistence-modules/java-jpa-3/README.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/persistence-modules/java-jpa-3/README.md b/persistence-modules/java-jpa-3/README.md
index c229c5a3a3..c024d7c540 100644
--- a/persistence-modules/java-jpa-3/README.md
+++ b/persistence-modules/java-jpa-3/README.md
@@ -12,3 +12,4 @@ This module contains articles about the Java Persistence API (JPA) in Java.
 - [How to Convert a Hibernate Proxy to a Real Entity Object](https://www.baeldung.com/hibernate-proxy-to-real-entity-object)
 - [Returning an Auto-Generated Id with JPA](https://www.baeldung.com/jpa-get-auto-generated-id)
 - [How to Return Multiple Entities In JPA Query](https://www.baeldung.com/jpa-return-multiple-entities)
+- [Defining Unique Constraints in JPA](https://www.baeldung.com/jpa-unique-constraints)