This is a regular “data quiz”. Follow it on LinkedIn. Test your knowledge or learn something new.
Today Question:
Which method ensures ACID properties in a database?
A) Indexing
B) Transactions
C) Cache
D) Sharding
Correct Answer: B
Explanation
Transactions are the core mechanism that ensures ACID properties in databases. ACID stands for Atomicity, Consistency, Isolation, and Durability. Atomicity guarantees that a transaction is completed fully or not at all. Consistency ensures the database remains in a valid state before and after the transaction. Isolation ensures concurrent transactions do not interfere with each other. Durability means that once changes are committed, they persist even in case of system failure. Transactions group multiple operations into a single logical unit that can either be committed or rolled back. This is critical for operations such as bank transfers, where money must be deducted from one account and added to another as an atomic operation. Without transactions, databases could easily end up in inconsistent states.