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 JSON Editor includes default global catalogs as well as default catalogs for each of the built-in frameworks, and you can also create your own. Oxygen JSON Editor uses these XML Catalogs to resolve references for document validation and transformations.