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HOW MANY TYPES OF VIEWS
why are older data models are being replaced by new data models
Self-Join: In a self join a table is joined with itself. Let consider the following sample partial data of EMP table EMPNO ENAME MGRID
It defines that the tuple in one relation that refers to another relation must refer to an existing tuple in that relation. This constraint is states on two relations (not essentia
Write a query that display ename annual salary and comm from emp table
In this assignment, you will create a program that works with multiple tables. In this assignment, you will work with the factory and sales tables. 1. Create a new project nam
Question: Using the data model express the following queries in SQL. (a) Create the Table named "Cinema" and make the cinema_code to be the primary key of the relation and
the of super market system done in database
define normalisation and functional dependency
4. Describe three ways to handle missing field values
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