Hosting W3 XML Schema files locally

Solution 1:

To host external XSDs, including any from W3C, locally:

1. Identify external XSD dependencies.

   You can identify an XSD's external dependencies through the transitive closure of all XSD's given by xs:include and xs:import @schemaLocation attributes. (No xs:include or xs:import implies no dependencies.)

2. Copy the XSDs locally.

   Note that to actually retrieve xml.xsd, use a tool other than a browser (e.g. wget) or view the source of the file served to your web browser.

3. Adjust references to the XSDs.

   Update the @schemaLocation attributes to reference the local rather than the remote copy. See How to reference a local XML Schema file correctly? Or, use an XML Catalog to remap to a local location.

Note that you do not need to change any namespace URIs, which are lexical constructs that do not need to be retrievable.