ACID properties transaction is _________________.
ACID properties transaction is _________________.
The correct option is D All of the above
A transaction is a very small unit of a program and it may contain
several low level tasks. A transaction in a database
system must maintain Atomicity, Consistency, Isolation, and Durability −
commonly known as ACID
properties −accuracy,
completeness, and data integrity.
Atomicity:- The entire
transaction takes place at once or doesn’t happen at all. There is no midway
that is transactions do not occur partially. Each transaction is considered as
one unit and either runs to completion or is not executed at all.
Consistency:- Integrity
constraints must be maintained so that the database is consistent before and
after the transaction. It refers to correctness of a database.
Isolation:- Multiple transactions
can occur concurrently without leading to inconsistency of database state.
Transactions occur independently without interference. Changes occurring in a
particular transaction will not be visible to any other transaction until that
particular change in that transaction is written to memory or has been committed.
A transaction is a very small unit of a program and it may contain several low level tasks. A transaction in a database system must maintain Atomicity, Consistency, Isolation, and Durability − commonly known as ACID properties −accuracy, completeness, and data integrity.
Atomicity:- The entire transaction takes place at once or doesn’t happen at all. There is no midway that is transactions do not occur partially. Each transaction is considered as one unit and either runs to completion or is not executed at all.
Consistency:- Integrity constraints must be maintained so that the database is consistent before and after the transaction. It refers to correctness of a database.
Isolation:- Multiple transactions can occur concurrently without leading to inconsistency of database state. Transactions occur independently without interference. Changes occurring in a particular transaction will not be visible to any other transaction until that particular change in that transaction is written to memory or has been committed.
