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ACID : Java Glossary  

                         

ACID is the short form of the four properties guaranteed by transactions: atomicity, consistency, isolation, and durability.

Atomicity means a transaction must execute in atomic means either it must excute completely or not at all. Atomicity guarantees that operations with in a transaction follow the rules of all-or-nothing paradigm either all the database updates are performed , or nothing happens is a n error occurs at any time

Consistency It is a character that must be enforced by both the transactional system as well as the application developer. Consistency ensures about the state to be consistent of the system after a transaction completes. Integrity is referred by by consistency of the underlying data store. Atomicity helps in enforcing to the system for appearing to be consistent.

Isolated It allows a transaction in order to execute from another process or transactions without interference. Simultaneously executing transactions are protected by transactions without having knowledge about each other since each transaction is isolated from each others.

Isolation sees each others incomplete results in order to protect concurrently executing transactions. In order to read or writed to a database isolation allows multiple transactions without having knowledge about each other since each transaction is isolated from each others.

Durability It means, all the data must be written to some type of physical storage before the transaction is successfully completed while changes are made to the course of a transaction. 

                         

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