Designs dynamic query control based on multi-table and uses in query system
solves some defects including poor flexibility
difficult maintainability and low reusability of the traditional static query method and less query information and the poor data independence in previous dynamic query method based on a data table
makes user query the correlative data items
and provides the detail information.The query method not only makes user to compare and analysis data
but improves the efficiency of the system development.The test result show the performance of the query sub-system is good too.