COMPUTER APPLICATIONS
DATABASE MANAGEMENT SYSTEMS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which one of the following commands is used to restore the database to the last committed state
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Roll back
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Save point
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Committ
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Both A and B
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Explanation:
Detailed explanation-1: -To restore the database to the last committed state ( or to undo the latest changes), the “rollback” command is used that belongs to the Transaction Control Language.
Detailed explanation-2: -ROLLBACK is the SQL command that is used for reverting changes performed by a transaction. When a ROLLBACK command is issued it reverts all the changes since last COMMIT or ROLLBACK.
Detailed explanation-3: -Answer: ctrl+Z is used to restore deleted files and folder from the recycle bin.
Detailed explanation-4: -Explanation: Commit command is used to permanently save any transaction into the database.
There is 1 question to complete.