Troubleshoot problems: You can learn more about how to troubleshoot common problems with database unit testing.
排除问题：可以详细了解如何排除数据库单元测试的常见问题。
It is not advisable to use simple file-based databases like Cloudscape or Derby as a database management system for WebSphere Process Server, other than for the purpose of unit testing.
不建议使用Cloudspace或Derby这样的基于文件的简单数据库作为WebSphere Process Server的数据库管理系统，单元测试除外。
If you're using ActiveRecord for your database backing, you will likely do all of your unit tests with database-backed testing.
如果为数据库支撑使用了ActiveRecord，则很可能会用受数据库支撑的测试进行所有的单元测试。
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