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Explain the challenges before an E-business management.
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Creating views with Read only option : In the view definition this option is used to make sure that no DML operations can be done on the view.
Explain Foreign Key? Foreign Key - Let there are two relations (tables) R and S. Any candidate key of the relation R that is referred within the relation S is known as the fo
What is meant by Physical blocks? The input and output operations are completed in block units. The blocks residing on the disk are referred to as physical blocks.
explaination
In which relational modes, cardinality is termed? Answer : Cardinality is termed in a number of tuples relational modes.
What is System R? What are its two major subsystems? System R was intended and developed over a period of 1974-79 at IBM San Jose Research Center. It is a prototype and its pur
I need to Map an E-R diagram to a relational schema
Home based assignment Consider an ORDER table with the following attributes: • Order Number (ONo),Customer Number (CNo),Customer Name (CNa),Item Number (INo),Unit Price (UP), Quant
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