diff --git a/persistence-modules/core-java-persistence/README.md b/persistence-modules/core-java-persistence/README.md
index 26bd4bf00f..1187cc15c4 100644
--- a/persistence-modules/core-java-persistence/README.md
+++ b/persistence-modules/core-java-persistence/README.md
@@ -8,3 +8,4 @@
 - [Introduction to the JDBC RowSet Interface in Java](http://www.baeldung.com/java-jdbc-rowset)
 - [A Simple Guide to Connection Pooling in Java](https://www.baeldung.com/java-connection-pooling)
 - [Guide to the JDBC ResultSet Interface](https://www.baeldung.com/jdbc-resultset)
+- [Types of SQL Joins](https://www.baeldung.com/sql-joins)