Before any changes to database structure are attempted one should firs – McqOptions

MCQOPTIONS

1.	Before any changes to database structure are attempted one should first _________
A.	All of the above should be done.
B.	create a complete backup of the operational database only.
C.	test any changes on a test database only.
D.	clearly understand the current structure and contents of the database only.
Answer» B. create a complete backup of the operational database only.

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