Discuss the role of backup and test databases in database redesign
What will be an ideal response?
Typically, there are at least three different copies of the database schema used in database redesign: (1 ) a small test database for initial testing, (2 ) a large or full copy test database for further testing, and (3 ) the operational database itself. There must be a process to restore the test databases to their original state during the testing process so that tests can be rerun as needed. If it is not possible to use a full copy of a very large operational database for testing, an appropriate large scale test version must be created and used.
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