Database - Distributed Databases - Discussion

Discussion :: Distributed Databases - General Questions (Q.No.3)


A transaction manager is which of the following?

[A]. Maintains a log of transactions
[B]. Maintains before and after database images
[C]. Maintains appropriate concurrency control
[D]. All of the above.

Answer: Option D


No answer description available for this question.

Pallavi said: (Oct 4, 2020)  
A transaction manager is the one who maintains the log of transactions. He is responsible for maintaining data consistency, atomicity and durability during a transaction. Thus to check whether a data is consistent Or not he keeps the before and after database images and maintains appropriate concurrency control.

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