Appendix B. XML Metadata

JDO requires that additional metadata be specified for any persistence-capable classes. As has been seen in earlier chapters, this metadata is contained in an XML file. This appendix provides a reference to this metadata, explaining where the metadata file should be located and what the different elements contained within the metadata imply.

This appendix covers the following topics:

• Where the metadata should be located.

• What each metadata element implies.

• The XML DTD for the metadata.

• An example of a metadata file.