What is ACID?

ACID is a set of essential properties that ensure the reliability of transactions in a database management system (DBMS)

The acronym ACID stands for Atomicity, Consistency, Isolation, and Durability. Below are explanations for these properties:

  • Atomicity: Ensures that transactions are executed completely or not executed at all. If a transaction is interrupted, the system must revert to the state it was in before the transaction.
  • Consistency: Ensures that the database remains in a consistent state before and after each transaction. This means that any transaction will take the database from one valid state to another valid state, maintaining data integrity.
  • Isolation: Provides a mechanism to isolate transactions so that they do not interfere with each other. This means that transactions are executed in such a way that they appear to be the only operation being executed in the system.
  • Durability: Ensures that once a transaction has been confirmed, it will remain stored and recorded even in the case of system failures, errors, or restarts.

These properties are fundamental to ensure data reliability and integrity in systems handling transactions, especially in environments like the financial or banking sector where data accuracy and reliability are critical.