ACID Properties in DBMS

ACID properties of a transaction in a relational model are as follows:

  1. Atomicity: This property ensures that either the transaction happens completely or doesn't happen at all. Every transaction causes some data values in a table to either delete or update. It may also add a new row to the table. It is necessary that when a transaction happens, either all data values or rows are updated or none of the values is changed.
  2. Consistency: This property ensures that the data is consistent in every table. Data before and after a transaction is made must be consistent.
  3. Isolation: If two transactions are happening at the same place, either they should be independent of each other or one of these transactions must happen first. 
  4. Durability: Every transaction must be durable. This means that if a transaction occurs, then the changes made by this transaction to the database remain even in the event of a system failure. 
Thu, 04/22/2021 - 22:00
Tarun Goswami is a highly experienced professional, currently serving as Technical Lead at a well-established IT services company. With over 12 years of experience across multiple domains, he demonstrates his expertise and passion for the industry through his engaging and informative blog writing in his spare time.
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