这可能需要对数据流规范进行反复的细化，并在测试环境中应用该规范以证实其正确性。
This can require iterative refinements of the data-flow specification and applying the specification in test environments to prove the correctness.
此外，在测试前确保数据设置的完整性和正确性可以避免由于数据错误导致的测试失败，从而降低测试成本。
Also, ensuring that the data set-up is complete and correct prior to testing would avoid test failures due to data errors and thus reduce testing costs.
单击test按钮测试到数据库的连接，并确认Host Access配置的正确性。
Click on the test button to test the connection to the database and also to confirm the correctness of the Host Access configuration.
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