Ensuring data consistency during simultaneous access
Optimizing query performance
Backing up data
Questions & Step-by-Step Solutions
What is concurrency control in a DBMS?
Correct Answer: Concurrency control ensures data consistency in a DBMS.
Step 1: Understand that a DBMS (Database Management System) is a software that helps manage databases.
Step 2: Know that multiple users or processes can access the database at the same time, which is called 'concurrent access'.
Step 3: Realize that when multiple transactions (operations) happen at the same time, they can interfere with each other.
Step 4: Learn that concurrency control is a method used to manage these simultaneous transactions.
Step 5: Understand that the goal of concurrency control is to keep the data consistent and accurate, even when many transactions are happening at once.
Step 6: Recognize that concurrency control uses techniques like locking, timestamps, and versioning to prevent conflicts.
