Assessment item 3
Modelling & Normalisation
Value: 15%
Due date: 16-Apr-2017
Return date: 10-May-2017
Submission method options
Alternative submission method
Task
Normalisation

Using the given table/relation, do the following:
1. Draw a dependency diagram to show the functional dependencies in the relation
2. Decompose the following table into a set of 3NF relations
3. Draw a relational schema for your 3NF relations and show the referential integrity constraints
4. Manually drawing the dependency diagrams is not acceptable.
Trainer_ID Trainer_Name Room_No Room_Seats Class_Session Class_Name Class_Day School
101 Alana Fredrick 54A 36 9:00 ITC114 Mon Computing
102 George Edwards 22 28 9:00 ITC333 Mon Computing
103 Lilly Nelly 59 38 12:30 BUS350 Tues Business
104 Eddy Brown 53 30 12:30 ITC114 Thurs Computing
102 George Edwards 59 38 4:00 ITC504 Fri Computing
103 Lilly Nelly 18 24 12:30 BUS360 Wedn Business
102 George Edwards 53 30 9:00 ITC201 Wedn Computing
105 Sam Wang 22 28 4:00 ITC556 Tues Computing
106 Yifeng Chong 58 38 9:00 ITC556 Thurs Computing
Rationale
This assessment item is designed to test your understanding of the normalisation process based on existing data in order to minimise redundancies and data anomalies.
Marking criteria
The marking criteria for this assignment are:
Task HD DI CR PS FL
Decompose relation into 3NF and show relational schema for each relation and referential integrity constraints All relations in 3NF and all partial and transitive dependencies removed, each relation shows correct referential integrity constraints All relations in 3NF and all partial and transitive dependencies removed, each relation shows referential integrity constraints All relations in 3NF and all partial and transitive dependencies removed, most relations show referential integrity constraints All relations in 3NF and all partial and transitive dependencies removed, some relations show referential integrity constraints Incomplete decomposition or relations not in 3NF, no relations show integrity constraints
Create an ERD & show all entities, PK & KF attributes,
relationships, cardinality & optionality Comprehensive and accurate ERD that contains all entities, PK and FK attributes, associative entities included if required, all relationships shown and identified with correct cardinality and optionality Detailed and accurate ERD that contains all entities, PK and FK attributes, associative entities included if required, all relationships shown and identified with correct cardinality Thorough & reasonably accurate ERD that contains all entities, PK and FK attributes, associative entities included if required, all relationships shown with correct cardinality Adequate ERD that contains most entities, PK and FK attributes, associative entities included if required, all relationships shown with cardinality Incomplete or irrelevant ERD that contains some entities, relationships, and cardinality

The assignment is to be presented as a Word document, however you can do the dependency diagrams in any other software (PowerPoint is ok) but need to do a screen shot and place in the Word document - you need to do this for each NF level.

You need to follow the exact steps as shown in the slides from chapter 6 on normalisation: that is, you have to show 1NF, then 2NF and take it to 3NF.

You need to indicate the type of dependencies, and show the normalisation process as you resolve at each NF

You need to produce a final ERD after normalising. This may be done in Workbench, or in any other software

Hope the above notes are clear and helpful.