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Database - Distributed Databases - Discussion

Discussion Forum : Distributed Databases - General Questions (Q.No. 3)
Distributed Databases
3.
A transaction manager is which of the following?
Maintains a log of transactions
Maintains before and after database images
Maintains appropriate concurrency control
All of the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
1 comments Page 1 of 1.
Pallavi said:   2 years ago
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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