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Question:

Discuss about the Database Normalization

Answer:

Dependency Diagram

The dependency diagram is explaining the dependency in the above table. The fields are dependent on each other in Trainer, Room and Class Session table. There is partial and transitive dependency in between the fields.

3NF Relations

(Access Programmers n.d.)

Relational Schema

Trainer (Trainer_ID, Trainer_Name)

Primary Key - Trainer_ID

Room (Room_No, Room_Name, School)

Primary Key - Room_No

 Class_Session (Trainer_ID , Room_No,  Class_Session, Trainer_Name , Room_Name, Class_Name, Class_Day, School)

Primary Key - Trainer_ID, Room_No, Class_Session

Trainer_ID references Trainer (Trainer_ID)

Room_No references Room (Room_No)

(Guru99 2016)

ER Diagram

References

Guru99 2016, Learn Database Normalization with the help of a case study, Viewed on 11th April 2017 <https://www.guru99.com/database-normalization.html>

Access Programmers n.d., Normalizing the Table Design, Viewed on 11th April 2017  <https://www.access-programmers.com/normalizing-the-table-design.aspx>

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