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Determine object representation
As a designer, we must choose properly that when to use primitive types in representing objects and when to combine groups of related objects, what is exact representation of object attributes.
Explain Superkey Ans: A superkey is described in the relational model of database organization like a set of attributes of a relation variable for which it holds that in all re
In which form of relational database developer refers to a record? In a tuple form of relational database developer refers to a record.
explain exhausitively the problems associated with er diagrams with ellustrations
example of bank
What was the method in which records are physically stored in a specified order according to a key field in each record ? A method in which records are physically stored within
Draw entity relationship diagram for the following scenario. A university has many departments whereas each department belongs to that particular uni. That uni has also many bui
About Attribute inheritance
Let us first look into some of the important features of ER model. Entity relationship model is a high-level conceptual data model. It permits us to define the data invo
what do you understand by enhanced entity-relationship
What is the use of Union and intersection operation? Union: The result of this operation contains all tuples that are either in r1 or in r2 or in both r1 and r2.Duplicate tuple
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