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How to Unit test with JUnit frameworks like Mockito etc and &nbsp;test DAO layer without effecting the actual oracle database data. How do i mock &nbsp;and unit test. Is it better to use simple HSQL (or any other sample simple database)as a sample database instead of using real Oracle database?
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How to Unit test with JUnit frameworks like Mockito etc and  test DAO layer without effecting the actual oracle database data. How do i mock  and unit test. Is it better to use simple HSQL (or any other sample simple database)as a sample database instead of using real Oracle database?

unit test DAO layer

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