How to perform transaction and rollback operations in PostgreSQL?

To perform transactions and rollback operations in PostgreSQL, you can follow these steps:

1. Begin a transaction:

BEGIN;

1. Performing SQL operations in transactions, such as inserting, updating, or deleting data.

INSERT INTO table_name (column1, column2) VALUES (value1, value2);
UPDATE table_name SET column1 = new_value WHERE condition;
DELETE FROM table_name WHERE condition;

1. If an error occurs during the execution of a transaction or if a rollback operation is needed, you can use the following command to rollback the transaction:

ROLLBACK;

1. If all operations are successful and you want to commit the transaction, you can use the following command to commit the transaction:

COMMIT;

Be cautious and careful when executing transactions to ensure that operations are carried out correctly and meet the business requirements, minimizing errors or the need for rollbacks.