What does XML schema actually mean? Find out inside PCMag's comprehensive tech and computer-related encyclopedia.

We can define the vocabulary (what elements and attributes an XML document can use) using either a document type definition (DTD) or the XML Schema language.

In most cases, one would expect to define an XML Schema and then generate XML that is compliant with that schema.

Microsoft announced the addition of the Microsoft Office Visio 2003 XML Reference Schema to its open and royalty-free documentation and license program that was initially unveiled in November 2003.