Friday, April 16, 2010

Attributes

The Properties of an entity can be described by what is known as attributes..
Example
The Employee entity may be described by the following attributes.
Name , Age ,Salary ,Sex ,Address ,Phone etc.
The following two examples Employee entity and Book entity are shown with their attributes and value.
Employee(Name ,Salary ,Age ,Address ,Phone )
Employee(‘Deepak’,3000,42,’253’,Rajajinager,’Bangalore’,’5567234’)
Book( BookId , ‘ Rdbms ‘, ’S.Nandagopalan’,160.00)

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