Atomicity, Consistency, Isolation, Durability
Full Form of ACID
What is ACID?
ACID is an acronym that defines a set of properties guaranteeing that database transactions are processed reliably. Atomicity ensures that a transaction is all-or-nothing; if any part fails, the entire transaction is rolled back. Consistency guarantees that a transaction brings the database from one valid state to another, preserving all defined rules and constraints. Isolation ensures that concurrent transactions do not interfere with each other, appearing as if they were executed sequentially. Durability guarantees that once a transaction is committed, its changes persist even in the event of a system failure. In the Indian context, ACID compliance is critical for systems handling sensitive data such as banking applications (e.g., UPI transactions), railway reservation systems (IRCTC), and government databases like Aadhaar. These systems rely on ACID properties to maintain data integrity and prevent anomalies like double bookings or incorrect balances. ACID is commonly taught in computer science and IT courses across Indian universities, and questions about it frequently appear in GATE (Graduate Aptitude Test in Engineering) and other competitive exams. Understanding ACID is essential for database administrators, backend developers, and anyone involved in building robust transaction-based applications.
ACID का फुल फॉर्म
परमाणुकता, संगति, पृथक्करण, स्थायित्व
Example
The IRCTC booking system uses ACID properties to ensure that when a user successfully books a ticket, the seat is marked as occupied and payment is deducted atomically, avoiding double booking.