ndor specific
 configuration property may be ignored.
 <p>
 Examples:
 <br>
  <pre>
   &#064;DataSourceDefinition(name="java:global/MyApp/MyDataSource",
      className="com.foobar.MyDataSource",
      portNumber=6689,
      serverName="myserver.com",
      user="lance",
      password="secret"
   )

 </pre>
 <p>
 Using a <code>URL</code>:
 <br>
 <pre>
  &#064;DataSourceDefinition(name="java:global/MyApp/MyDataSource",
    className="org.apache.derby.jdbc.ClientDataSource",
    url="jdbc:derby://localhost:1