5 years ago in Database Management System

Before any changes to database structure are attempted one should first:

[A] clearly understand the current structure and contents of the database only.
[B] test any changes on a test database only.
[C] create a complete backup of the operational database only.
[D] All of the above should be done.
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Shamsa hafeez
Shamsa hafeez - 2 days ago

Shamsa hafeez from Lahore, Pakistan is saying All of the above should be done. is correct answer

Tsega Asresa Mengistu
Tsega Asresa Mengistu - 3 days ago

Tsega Asresa Mengistu from Dessie, Ethiopia is saying All of the above should be done. is correct answer

Deep
Deep - 1 month ago

Deep from Kolkata, India is saying All of the above should be done. is correct answer

Arpita Dhote
Arpita Dhote - 1 month ago

Arpita Dhote from Pune, India is saying All of the above should be done. is correct answer

indhuja indhuja
indhuja indhuja - 4 months ago

indhuja indhuja from Erode, India is saying All of the above should be done. is correct answer

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