Secure about -ds.xml !

[changemylife]

Hi all !
Before, I showed the article of security inside -ds.xml (inside \server\default\deploy) but now I don't remember its links.
My -ds.xml file :

.....
<local-tx-datasource>
 <jndi-name>MySqlDS</jndi-name>
<connection-url>jdbc:mysql://localhost/MyDatabase</connection-url>
 <driver-class>com.mysql.jdbc.Driver</driver-class>
 <user-name>root</user-name> ---> Not secure !
 <password>iloveyou</password> ---> Not secure !
 <min-pool-size>5</min-pool-size>
 <max-pool-size>20</max-pool-size>
 <metadata>
 <type-mapping>mySQL</type-mapping>
 </metadata>
</local-tx-datasource>
.....

Please Can show me some links about it !

Thank.

Catania.