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What is a view? Make a view of EMP table named DEPT 20, to display the employees in department 20 and their annual salary.
Ans: View is a virtual table that does not consists of it own data it fetch the data from the original table.
Create view DEPT20 as select * from dept;
Where dno=20 group by dno;
What is a security? Securities are claims on financial assets. They can be illustrated as "claim checks" which give their owners the right to receive funds in the future. Sec
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Haw does it work one database application
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What is database utility? Database utility is the interface among the ABAP/4 Dictionary and the underlying the SAP system.
how to design tables
Explain the concept of generalization and aggregation in E_R diagrams. Give one example for each one of them? Generalization: Consider extending the entity set account throug
can you create a database for me in oracle/sql
Write short notes on data ware housing? Data ware housing applications needs the transformation of data from many sources into a cohesive reliable step set of data configured a
State The position of object at any moment is called state. An object can have many states depend upon time. After receiving some input instructions, the object can change its
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