ACID Transactions in DBMS Explained

ACID transactions are sets of database operations that follow four principles—atomicity, consistency, isolation, and durability—ensuring data remains valid and reliable.

They guarantee data integrity even in the event of failures, making them essential for financial systems, compliance, and mission-critical applications.

Yes. While early NoSQL databases lacked ACID compliance, modern systems like MongoDB provide full support for ACID transactions at scale.

A bank transfer is a common example—the debit and credit must both succeed or both fail to keep the database consistent.

MongoDB supports multi-document transactions with guarantees for atomicity, consistency, isolation, and durability, even across sharded clusters.

Use them when data updates span multiple collections or documents, such as billing systems, financial transfers, or supply chain tracking.