Introduction When ever we process any DML statements transactions are implicitly called. Ie. when ever no begin transaction statement insert ,delete, update statements will have transaction statements around them implicitly. ACID concept is one of the oldest and important properties of the Database. It sets forward four goals that every database management system must strive to achieve: atomicity, consistency, isolation and durability. No database that fails to meet any of these four goals can be considered reliable. Atomicity Atomicity states that database modifications must follow an "all or nothing" rule. Each transaction is said to be "atomic." If one part of the transaction fails, the entire transaction fails. It is critical that the database management system maintain the atomic nature of transactions in spite of any DBMS, operating system or hardware failure. Consistency Consistency states that only valid data will be written to the database. If,...
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