diff --git a/manual/codes/Basic Components - DB - Chaining listeners.php b/manual/codes/Basic Components - Db - Chaining listeners.php
similarity index 100%
rename from manual/codes/Basic Components - DB - Chaining listeners.php
rename to manual/codes/Basic Components - Db - Chaining listeners.php
diff --git a/manual/codes/Basic Components - DB - Connecting to a database.php b/manual/codes/Basic Components - Db - Connecting to a database.php
similarity index 100%
rename from manual/codes/Basic Components - DB - Connecting to a database.php
rename to manual/codes/Basic Components - Db - Connecting to a database.php
diff --git a/manual/codes/Basic Components - DB - Introduction.php b/manual/codes/Basic Components - Db - Introduction.php
similarity index 100%
rename from manual/codes/Basic Components - DB - Introduction.php
rename to manual/codes/Basic Components - Db - Introduction.php
diff --git a/manual/codes/Basic Components - Db - Using event listeners.php b/manual/codes/Basic Components - Db - Using event listeners.php
new file mode 100644
index 000000000..43ef6a141
--- /dev/null
+++ b/manual/codes/Basic Components - Db - Using event listeners.php	
@@ -0,0 +1,36 @@
+<?php
+
+// using PDO dsn for connecting sqlite memory table
+
+$dbh = Doctrine_Db::getConnection('sqlite::memory:');
+
+class MyLogger extends Doctrine_Db_EventListener {
+    public function onPreQuery(Doctrine_Db_Event $event) {
+        print "database is going to be queried!";
+    }
+    public function onQuery(Doctrine_Db_Event $event) {
+        print "executed: " . $event->getQuery();
+    }
+}
+
+$dbh->setListener(new MyLogger());
+
+$dbh->query("SELECT * FROM foo"); 
+// prints:
+// database is going to be queried
+// executed: SELECT * FROM foo
+
+
+class MyLogger2 extends Doctrine_Overloadable {
+    public function __call($m, $a) {
+        print $m." called!";
+    }
+}
+
+$dbh->setListener(new MyLogger2());
+
+$dbh->exec("DELETE FROM foo");
+// prints:
+// onPreExec called!
+// onExec called!
+?>