Introduction - If you have any usage issues, please Google them yourself
1, learn how to write using XMLSPY integrated development environment, execution, and debugging XQuery.
2, understand and master the basic structure of the XQuery query plans, use a variety of clauses, declarations and use (recursive) function, use nested queries, able to skillfully use integrated development environment to complete the preparation of the various inquiries XQuery queries plan for the use of XQuery for data retri in the mainstream relational foundation.