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Explain Deadlock detection and recovery Deadlock Detection - A deadlock is said to take place when there is a circular chain of transaction, every waiting for the release of a
Explain the concept of deadlock Yes. It can direct to deadlock. Suppose that a batch of frames arrived correctly and were accepted. Then receiver will advance its window. Now s
What is the use of sub queries? A sub query is a select-from-where expression that is nested with in another query. A common use of sub queries is to do tests for set membershi
Write short notes on tuple relational calculus. The tuple relational calculation is anon procedural query language. It defines the desired information without giving a particul
what is specialization?
Mention the several levels in security measures. A) Database system B) Operating system C) Network D) Physical Human
Define check point and its impact on data base recovery. Ans: There could be hundreds of transactions handled per minute, in a large on-line database system.
Which language has presently become the defacto standard for interfacing application programs along with relational database system? The language which has recently become the
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How many levels can be viewed in Architecture of the database ? Architecture of the database can be viewed as three levels.
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