Question

The ____ command will prevent two users from trying to make changes to the same table at the same time.​

a. LOCK
b. BLOCK
c. PREVENT
d. RESTRICT

Answer 1

The LOCK command is used to prevent multiple users from editing the same table simultaneously, ensuring data integrity in database systems.

Step-by-step explanation:

The LOCK command is used in database management systems to ensure that concurrent access to a table does not lead to conflicts. When a user issues a LOCK command on a table, other users are prevented from making changes to the table until the lock is released. This is crucial in maintaining data integrity, especially in systems where multiple users may need to access and modify the same data at the same time.