XML schemas are an XML language for describing and constraining the content of XML files.
XML schemas are a proposed alternative for the document type definition (DTD) based on XML. They are a formal specification of element names that indicates which elements are allowed in an XML file, and in which combinations. A schema is functionally equivalent to a DTD, but is written in XML; a schema also provides for extended functionality such as data typing, inheritance, and presentation rules.
For more information on XML schema, refer to:
This product provides an XML schema editor for creating, viewing, and validating XML schemas. Using the XML schema editor, you can do the following:
The XML schema support in the XML schema editor is based on the
W3C XML Schema Recommendation Specification of 2 May 2001
The XML Schema specification from the W3C Web site is used for validation.
Three status indicators for the schema are available. They are in the bottom right corner:
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