Various Transaction Control Commands of SQL:

Transaction control commands in SQL are used to manage transactions within a database. These commands help ensure data integrity and consistency by allowing users to control the outcome of a transaction. Here are some common transaction control commands in SQL:

1. COMMIT:
- The COMMIT command is used to permanently save changes made during the current transaction.
- Once a COMMIT command is executed, the changes are written to the database and cannot be rolled back.

2. ROLLBACK:
- The ROLLBACK command is used to undo changes made during the current transaction.
- If a transaction encounters an error or needs to be aborted, the ROLLBACK command can be used to revert the database to its state before the transaction started.

3. SAVEPOINT:
- The SAVEPOINT command is used to set a point within a transaction to which you can roll back.
- SAVEPOINT allows you to create multiple points within a transaction, giving you more flexibility in managing and controlling the transaction.

4. SET TRANSACTION:
- The SET TRANSACTION command is used to set the characteristics of a transaction, such as isolation level or access mode.
- This command allows you to customize the behavior of a transaction to suit your specific needs.

Transaction control commands are essential for maintaining data integrity and ensuring that database operations are carried out successfully. By understanding and using these commands effectively, you can manage transactions efficiently and prevent data inconsistencies.