a) Draw the Entity Relationship (E-R) diagram from the following relations: Employee (EmployID, FirstName, LastName, SSF, Gender,

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a) Draw the Entity Relationship (E-R) diagram from the following relations:

Employee (EmployID, FirstName, LastName, SSF, Gender, Department)

Contact (PhoneNo, EmployID, EmailAddress, SkypeID, DigitalAddress, PostalAddress)

Department (DeptID, EmployID, DeptName, DeptHead) explaining the symbols used.

b) State all possible primary keys and foreign key from the relations above.

c) Deduce if any, derived attributes from the diagram.

Posted Date: Sep 28, 2021 08:36 AM

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a) Draw the Entity Relationship (E-R) diagram from the following relations: Employee (EmployID, FirstName, LastName, SSF, Gender,

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Expert Answer:

Solution ER Diagram we actually want to describe the structure of the database with the help of a diagram that diagram is known as Entity Relationship ... View the full answer

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