Meta-Data - JDOConfig

JDO allows you to define a file jdoconfig.xml that specifies the properties for a named PMF. As always with XML, the metadata must match the defined DTD/XSD for that file type. This section describes the content of the jdoconfig files. All jdoconfig files must contain a valid DTD/DOCTYPE specification. You can use PUBLIC or SYSTEM versions of these.

Here are a few examples valid for jdoconfig files with DTD specifications 

<!DOCTYPE jdoconfig PUBLIC 
    "-//Sun Microsystems, Inc.//DTD Java Data Objects Configuration 3.0//EN"
    "http://xmlns.jcp.org/dtd/jdoconfig_3_0.dtd">

<!DOCTYPE jdoconfig SYSTEM "file:/javax/jdo/jdoconfig.dtd">

Here is an example valid for jdoconfig files with XSD specification 

<?xml version="1.0" encoding="UTF-8" ?>
<jdoconfig xmlns="http://xmlns.jcp.org/xml/ns/jdo/jdoconfig"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/jdo/jdoconfig
        http://xmlns.jcp.org/xml/ns/jdo/jdoconfig_3_0.xsd">
    ...
</jdoconfig>

Your MetaData should match either the DTD or the XSD specification.