What is XML schema?

XML schema is used to describe the structure of XML documents. XML schema is also an XML document and is a substitute for DTD. It can describe the elements of an XML document, the number of child elements, the sequence of child elements, the attributes of the elements, and the data type.

You can use XPath to query nodes in XML documents. The tree-based structure is used to represent XML documents.

 

XML Schema

XML Schema describes the structure of the XML document. it is a XML-based alternative to DTD. it defines the elements, the number of child elements, the order of child elements, the attribute of the element, and data type.

XPath is a query language to select nodes from XML documents. It is based on a tree representation of the XML document.