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Explain the benefit of OOM. Main benefits of object oriented modeling are development of system become fast, quality of the system get improve. It gives freedom of use of alrea
Mention the several levels in security measures. A) Database system B) Operating system C) Network D) Physical Human
Write a query that display ename annual salary and comm from emp table
how to write tables and drow E-R diagrams for hosiptal management system and how to normalize and cardinalities?
In a relational model how relations are termed? In a relational model, relations are termed as tables. (The term ‘relation’ is the technical name of the ‘table’ in RDBMS)
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Define data conversion? Helpful to load data into temporary staging tables. Then can write SQL code to do much of data processing. SQL code is simpler and faster to write than
A database is to be constructed to remain track of the teams and games of a sport league. A team has a number of players, not all of whom participate in every game. It is desired
Which is an advantage of view? The Advantages of view is Data security, Derived columns and Hiding of complex queries
Define the concept of generalization A generalization is relationship between specific kind of thing and general thing. It is also known as "is-a-kind-of" relationship. Inher
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