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Discuss deferred update technique of recovery. What are the advantages?
Ans: The deferred update methods do not physically update the database on disk till after a transaction reaches its commit point; after that the updates are recorded in the database. Alternatively, deferred update methods postpone any actual updating of the database on disk until a transaction arrives its commit point. The transaction force-writes the log to disk previous to recording the updates in the database
Advantages:
prototype of a distributed information system for a national car part retail outlet chain.
.#question. Discuss the problem which may arise during concurrency control and recovery in distributed database which are not encountered in controlized database environment.
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he SQL query that will return the order number, quantity ordered, price each and total cost of an order (quantity * price each) from the order details table. Label the calculated c
please describe the data base management with the easy example &give the application?
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