MySQL Transaction Handlers

MySQL Transaction Handlers are programming constructs that allow developers to manage transactions in MySQL databases. Transactions are sequences of related database operations that are treated as a single unit of work, so that either all the operations are executed successfully, or none of them are executed.

MySQL supports the use of transaction handlers to help manage transactions. These handlers are used to capture and respond to errors or other conditions that occur during transaction processing. Some common transaction handlers include:

1. DECLARE HANDLER - This handler is used to declare an exception handler for a specific error condition.

2. BEGIN/END - These statements are used to define the beginning and end of a transaction.

3. ROLLBACK - This statement is used to undo the changes made during a transaction.

4. COMMIT - This statement is used to finalize the changes made during a transaction.

Using these handlers, developers can ensure that their database transactions are executed reliably and consistently. This helps to prevent data corruption and other issues that can arise when multiple database operations are performed simultaneously.