In HSQLDB,
COMMIT and
ROLLBACK are SQL commands used to manage transactions and their outcomes. Here's the difference between them:
COMMIT :
* The COMMIT command is used to finalize a transaction and make its changes permanent.
* When you issue a COMMIT command, all the changes made within the transaction are saved to the database, and the transaction is completed.
* Once a transaction is committed successfully, its changes become visible to other transactions, and the database state is updated accordingly.
* If a transaction encounters an error or is explicitly rolled back before being committed, its changes are not saved to the database, and the transaction is aborted.
ROLLBACK :
* The ROLLBACK command is used to cancel or undo a transaction and discard its changes.
* When you issue a ROLLBACK command, all the changes made within the transaction are undone, and the database is reverted to its state before the transaction began.
* If a transaction encounters an error or if you decide to cancel it before committing, you can issue a ROLLBACK command to rollback its changes and abort the transaction.
* ROLLBACK can be used to handle errors or exceptional conditions gracefully by reverting the database to a consistent state.
