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Questions and Answers
Which statement is true about Transaction Control Language (TCL)?
Which statement is true about Transaction Control Language (TCL)?
- TCL is used to control transactional processing in a database (correct)
- TCL is used to save the changes permanently in the database
- TCL is used to create points within groups of transactions
- TCL is used to undo all changes of a transaction
What does the COMMIT command do?
What does the COMMIT command do?
- Saves the changes permanently in the database (correct)
- Undoes all changes of a transaction
- Creates points within groups of transactions
- Marks the current point in the processing of a transaction
What does the ROLLBACK command do?
What does the ROLLBACK command do?
- Saves the changes permanently in the database
- Undoes all changes of a transaction (correct)
- Marks the current point in the processing of a transaction
- Creates points within groups of transactions
What does the SAVEPOINT command do?
What does the SAVEPOINT command do?
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What does the SAVEPOINT statement do in the given example?
What does the SAVEPOINT statement do in the given example?
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Transaction Control Language (TCL) is used to control transactional processing in a database.
Transaction Control Language (TCL) is used to control transactional processing in a database.
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The COMMIT command permanently saves the changes made in a transaction.
The COMMIT command permanently saves the changes made in a transaction.
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The ROLLBACK command undoes all the changes made in a transaction.
The ROLLBACK command undoes all the changes made in a transaction.
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The SAVEPOINT command marks the current point in the processing of a transaction.
The SAVEPOINT command marks the current point in the processing of a transaction.
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The SAVEPOINT command creates groups of transactions.
The SAVEPOINT command creates groups of transactions.
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