Software test is necessary and important to ensure software quality, and database test has been attached great importance to. Automatic test data generation is the important work of database test. The quality of the test data generation will directly affect the completeness and efficiency of the test. Firstly, the paper explains the basic idea of MultiRQP method. Secondly, by way of example it detailedly analyzes the two elements of the application of this method, that is, RQPdisjoint and Query Refinement. Then, it gives the application development. Finally, the paper points out the direction of further research.

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