Transaction Control in SQL
Understand the purpose and use of SQL transaction control commands including START TRANSACTION, COMMIT, ROLLBACK, and SAVEPOINT. This lesson helps you ensure data integrity by grouping multi-step operations into logical units, handle errors gracefully, and maintain consistent data in real-world database scenarios.
Imagine we’re processing a customer’s large order in our OnlineStore database.
The system updates stock quantities, loyalty points, and the order records. But what if, midway through this process, a failure occurs—perhaps a system crash or a data error? Without proper safeguards, we could end up with inconsistent data: reduced stock but no recorded order.
That’s where transaction control in SQL becomes essential. ...