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what is relationship inheritance and attribute inheritance
What are multiple inheritances? Multiple inheritances allow a class to inherit variables and methods from many super classes.
Define Two phase commit Two phase commit: To make sure atomicity, all the sites where a transaction is being executed must agree on the final outcome of the execution. The tran
Design an algorithm to implement operations Each and every operation specified in the functional model could be formulated as an algorithm. The algorithm indicates how operat
sql is relationally complete-justify
Differentiate between horizontal & mixed horizontal fragmentation?
What are the technique to define a schema completely ? A schema is completely define by DDL and DML query language.
Determine the rule that a value of a foreign key should appear as a value of some particular table is called a Ans: Referential constraint. The rule that a value of a fo
Question: In a multi-user database environment, locking mechanisms can be used to solve the three basic problems of concurrency. On the other hand, however, locking may also le
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