Identify the technique through which an SQL database ensures that other transactions do not modify a database until the first transaction succeeds or fails.
A)Redundancy control
B)Access control
C)Concurrency control
D)Integrity control

Question

Quizplus · Accepted Answer

Concurrency control is the technique used in SQL databases to ensure that multiple transactions do not modify the database at the same time, which could lead to inconsistencies and errors. It ensures that each transaction has exclusive access to the database until it is completed, either successfully or unsuccessfully. This is usually done through the use of locks, which prevent other transactions from accessing the same data until the lock is released. Redundancy control, access control, and integrity control are also important aspects of database management, but they do not specifically address the issue of concurrency control.

Identify the Technique Through Which an SQL Database Ensures That