src/main/asciidoc/orm_dtd.adoc

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== Meta-Data - ORManchor:Meta-Data_-_ORM[]

JDO defines XML MetaData in *jdo* files as well as *orm* files. As
always with XML, the metadata must match the defined DTD/XSD for that
file type. This section describes the content of the *orm* files. The
content of *jdo* files can be found link:jdo_dtd.html[here]. All *orm*
files must contain a valid DTD/DOCTYPE specification. You can use PUBLIC
or SYSTEM versions of these.

Here are a couple of examples valid for *orm* files with DTD
specification

....
<!DOCTYPE orm PUBLIC
    "-//Sun Microsystems, Inc.//DTD Java Data Objects Mapping Metadata 3.0//EN"
    "http://xmlns.jcp.org/dtd/orm_3_0.dtd">

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

{empty} +


Here is an example valid for *orm* files with XSD specification

....
<?xml version="1.0" encoding="UTF-8" ?>
<orm xmlns="http://xmlns.jcp.org/xml/ns/jdo/orm"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/jdo/orm
        http://xmlns.jcp.org/xml/ns/jdo/orm_3_0.xsd">
    ...
</orm>
....

Your MetaData should match either the
http://xmlns.jcp.org/dtd/orm_3_0.dtd[DTD] or the
http://xmlns.jcp.org/xml/ns/jdo/orm_3_0.xsd[XSD] specification.