Normalization

1. Create an initial Entity Relationship Diagram (ERD) for the above system. -­‐
marks 20 2. Normalise the attributes to Third Normal Form (3NF) showing all intermediate stages of Unnormalised Form (UNF), First Normal Form (1NF) and Second Normal Form (2NF). Be careful to highlight attributes used for keys. – marks 50 3. Name the 3NF relations and draw the 3NF Entity Relationship Diagram using the notation of soft boxes and crow’s feet. (You are not required to show optionality on relationships.) – marks 10 4. Compare the initial ERD with the 3NF ERD, discuss the differences and draw the final ERD for the system. – marks 20

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