Question

What makes a sequence of database operations a transaction? All database operations must either complete in its entirety or have no effect Atomicity, Consistency, Isolation, Durability All results must conform to existing constraints in the database Database operations cannot be transactions

Answer 1

Answer:

All database operations must either complete in its entirety or have no effect Atomicity, Consistency, Isolation, Durability

Explanation:

A database transaction must be atomic in the sense that it must either be complete in its entirety or would have no effect. Consistent-it should be by conforming to the constraints that are found in the database. Isolated - in the sense that it must not be seen to affect other transactions. Durable – there must be possibility for it to be written to a storage that is persistent.

Answer 2

The sequence of the database operations is made as a transaction as all the database operations must either complete in its entirety or have no effect Atomicity, Consistency, Isolation, Durability.

What is database transaction?

The database transaction must fulfill all four characters, that is must be atomic- it should be complete within itself; it should be consistent- conforming to the existing database; it should have isolation- not affecting other transactions; and should have durability- for longer storage.

Therefore, option A. is correct.

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