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Differentiate between a subquery and a join
If we need to acquire information from one or more tables after that either subquery or join can be used. If the columns which are to appear in the result table are from different tables after that a join must be employed.
For the relations R and S given below: R S A B C 1 4 7 2 5 8 3 6 9
Differentiate sub-class and super-class? The specialization of a class is known as subclasses.eg: employee is a subclass of person and teller is a subclass of employee. Convers
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I need help in doing my dbms project
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List and explain the memory constructs of the Oracle 12c databases?
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