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XML Catalog

An XML Catalog maps a system ID or a URI reference for a resource (stored either remotely or locally) to a local copy of the same resource. Whenever XML processing relies on external resources (such as referenced schemas and stylesheets), the use of an XML Catalog becomes a necessity when Internet access is not available or the connection is slow.

Oxygen XML Developer includes default global catalogs as well as default catalogs for each of the built-in frameworks, and you can also create your own. Oxygen XML Developer uses these XML Catalogs to resolve references for document validation and transformations. For more information, see Working with XML Catalogs.