Part A Relational Database Design 30 Marks Consider The Following Er Diagram Which Shows Aspects Of The Business Of 1 (95.7 KiB) Viewed 23 times
Part A: Relational Database Design (30 Marks) Consider the following ER diagram, which shows aspects of the business of a real estate agency. As a part of the Assignment 1 activities, we have learned how to map entities and relationships in a E-R model into a relational database schema. We have used the 7-step mapping process. Supervise > 0..1 Staff Branch Work At Branch No (PK) Address 1..1 Street ON Staff No (PK) Name Address 1.1 Position Salary ..N Manage Suburb Postcode Telephone (0.2) b.N Notes Fee Process Customer O..N Job Lodges 0. Cust No (PK) Address Street Suburb Postcode Email 1..1 Job No {Partial Key} Fault As a result of incorrect application of 7-step mapping process, it was mapped into following relations.
5. Write down the final relational database schema. Important: No marks are awarded to the final schema in Part 5 if you do not show the workings of decompositions (in Part 3) and combining relations (in Part 4). Indicate the primary key (underlined) and foreign key(s) (with an asterisk*) in each relation.
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