diff --git a/_includes/databases.md b/_includes/databases.md
index d49271a..858926a 100644
--- a/_includes/databases.md
+++ b/_includes/databases.md
@@ -21,7 +21,13 @@ This is terrible code. You are inserting a raw query parameter into a SQL query.
 This is correct code. It uses a bound parameter on a PDO statement. This escapes the foreign input ID before it is introduced to the database preventing potential SQL injection attacks.
 
 * [Learn about PDO][1]
+* [Doctrine2 DBAL][2]
+* [ZF2 Db][4]
+* [ZF1 Db][3]
 
 [Back to Top](#top){.top}
 
 [1]: http://www.php.net/manual/en/book.pdo.php
+[2]: http://www.doctrine-project.org/projects/dbal.html
+[3]: http://framework.zend.com/manual/en/zend.db.html
+[4]: http://packages.zendframework.com/docs/latest/manual/en/zend.db.html