Answer
ACID summarizes atomicity, consistency, isolation, and durability properties of transactions. • Atomicity treats a transaction as an all-or-nothing unit. • Isolation controls interaction between concurrent transactions. • Durability means committed results survive later failures within the database guarantees.
💡 SQL Example
BEGIN;
INSERT INTO orders (order_id, customer_id) VALUES (100, 1);
COMMIT;
Result
COMMIT
⚡ Quick Revision
ACID describes core transaction reliability properties.