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Data independence seems that "the application is independent of the access strategy and storage structure of data". In other words, the ability to change the schema definition in o
Which is an advantage of view? The Advantages of view is Data security, Derived columns and Hiding of complex queries
construct a b-tree for the following set of key values 2,3,5,7,11,17,19,23,29,31.assume that the tree is initial empty and the values are added in ascending order
Explain the Functional Mode with help of an example. Functional Model The functional model shows a computation and functional derivation of data values in it without ind
List the Armstrong's axioms for functional dependencies. What do you understand by soundness and completeness of these axioms? Ans: The Armstrong's axioms are: F1:
The physical location of a record is determined by which mathematical formula that transforms a file key into a record location? The physical location of a record is determined
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.
Gyan Gurukul is a software company that provides software related solution. Ashutosh Dubey who is the director of Gyan Gurukul want a three-level schema architecture for the Gyan G
Explain What is Relation? A database relation is a predefined row or column format for storing information in a relational database. Relations are equal to tables.
what is cascading? what is rollback cascading? please explain in detail
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