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What is called query processing?
Query processing refers to the range of activities included in extracting data from a database.
Define outer union operation of the relational algebra. Compute the outer union for the relations R and S given below. Outer Join - If there are any values in one tabl
Concatenation operator Example : Printing name and job as one string as column name employees: SELECT ENAME||JOB "EMPLOYEES" FROM EMP;
Benefits: It limits data access. It makes difficult queries look easy. It permits data independence. It presents dissimilar views of the similar data.
Control as Concurrent Tasks The expression control as simultaneous task means applying control for those events of object which can happen simultaneously. An object can be imp
What is nested relational model? The nested relational model is an extension of relational model in which domains might be either atomic or relation valued.
#question.what is mapping constraints and types?.
gyan gurukul is a software company that provides software related solution.
What is disadvantage of multiple inheritances? There is potential ambiguity if the similar variable or method can be inherited from more than one superclass.eg: student class m
Advantages and disadvantages of icloud based storage
Explain the function of Object model Object model describes the classes of objects in system, including their attributes and operations which they support. The analysis object
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