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Transactions and the ACID principle
A
Transaction
is an indivisible unit of processes such as reads and writes.
ACID
is an acronym for
Atomicity
,
Consistency
,
Isolation
and
Durability.
•
Atomicity:
A Transaction fails even if only one part of it fails.
•
Consistency:
A Transaction brings the database from one consistent state to
another.
•
Isolation:
Transactions cannot interfere with each other.
•
Durability:
Data changed by committed Transaction are persisted, even after a
power loss or error.