What is ACID?

Question Posted / amith

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What is ACID?..

Answer / gurmeet shah

Atomicity,Consistency,Isolation,Durability

Atomicity:
1. a transaction is a unit of operation - either all the
transaction's actions are completed or none are
2 atomicity is maintained in the presence of deadlocks.

Consistency: Consistency is the ACID property that ensures
that any changes to values in an instance are consistent
with changes to other values in the same instance

Isolations: The isolation portion of the ACID properties is
needed when there are concurrent transactions. Concurrent
transactions are transactions that occur at the same time

Durability:It refers to the ability of the system to
recover committed transaction updates if either the system
or the storage media fails.

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What is ACID?..

Answer / amith

Automicity transactions are atomic and should be treated
as one in case of rollback. Consistency - the database
should be in consistent state between multiple states in
transaction.

Isolation no other queries can access the data modified by
a running transaction. Durability system crashes should not
lose the data.

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