data model in DBMS, Database Management System

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how many types of data model in DBMS? explain data abstraction with its different level

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What is view in SQL? How is it defined? Any relation that is not part of the logical model, but is made visible to a user as a virtual relation is known as a view. We descri

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It is not possible to make an ABAP/4 program, which having only Subroutines. False. We can make ABAP/4 program, which having only Subroutines.

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What is authorization graph? Passing of authorization from single user to another can be shown by an authorization graph.

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A B-tree of order how much children m has maximum ? m has maximum m mchildren in a B tree.

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