Strict Two-Phase Locking

Strict Two-Phase Locking (Strict 2PL) is a method used in databases to ensure data reliability during transactions. It works in two phases: first, a transaction acquires all necessary locks (locks prevent others from changing data), and then it releases them only after completing all its operations. This approach guarantees that transactions are executed in a way that prevents conflicts and maintains data consistency. By holding all locks until the end, Strict 2PL prevents problems like conflicting updates or reading uncommitted data, ensuring reliable, accurate database operations.