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What is the most significant feature that does not directly map into programming language structures? Why? Association, since there are complex types of association, like as qu
How does the system cope up with a record crash when recovery is going on after the first crash? Ans: In a system the undo and redo operations are needed to be idempotent to c
In Oracle what is system global area and how is it organized? The SGA is a collection of shared memory fields which along with the Oracle processes constitute an Oracle instan
Describe in brief about the Sequence Diagrams Sequence diagrams are interaction diagrams which emphasize time ordering of messages. In UML, it is shown as a table which shows
how to calculate frequency count of algorithm
Lost Updates : Suppose the two transactions T3 and T4 run simultaneously and they happen to be interleaved in the following way (suppose the initial value of X as 10000):
In case of entity integrity, the primary key may be declared? In a case of entity integrity primary key may be not Null.
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Explain Two phase locking protocol A transaction is consider as to follow the two-phase locking protocol if all locking operations precede the first unlock operation in the tra
Database Administrator One of the main perpose for having the database management system is to have control of both data or programs accessing that data. The person having li
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