The XML schema commonly known as an XML Schema Definition (XSD), On May 2, 2001, the World Wide Web Consortium (W3C) has published XSD in its version 1.0 format. It formally describes what an given XML document can contain, in the same way that the database schema describes the data that can be contained in a database (i.e. table structure, data types, constraints etc.). The XML schema defines the shape, or structure, of the XML document, along with rules for data content & semantics such as what fields an element can contain, which sub elements it can contain & how many items can be present. An XML Schema is composed of the top-level schema element. The schema element definition must include the namespace. Register with IDES Trainings for XML Schema Training, We can help you get the most out of your investment