1. Synthesize user requirements/inputs and analyse the matching data processing needs, demonstrating adaptability to changing circumstances;
2. Develop an enterprise data model that reflects the organization’s fundamental business rules; refine the conceptual data model, including all entities, relationships, attributes, and business rules.
3. Derive a physical design from the logical design taking into account application, hardware, operating system, and data communications networks requirements;
Case Study: Prestige Automobile Rental (PAR) is a vehicle rental company that rents old vehicles to the public. PAR has been using manual methods for keeping track of their customers and their rentals. However, the company would now like to go online and allow customers to search the available vehicles and see their rental history.
For the first time, when the customer rents a vehicle from PAR their details (name, address, phone number, driving license number and credit card number) are recorded. The date they become a customer is also stored. There are certain types of vehicles which are classified as heavy vehicles. It is a policy of PAR that these vehicles are only rented to customers who have no demerit points on their driving license.
The information about the vehicle (type, registration number, year/make/model, vin number, distance travelled and current condition) are also stored. Each vehicle has a unique ID. The customer can search for their desired vehicle and can see if it is available.
All rentals are for 7 days. Rental charges are based on the type of vehicle (Car (C) or Heavy Duty (HD)). Rental must be paid for on collection. Customers can rent up to 2 vehicles at a time. Each rentalID is for a single vehicle for one customer. (The rentalID is an auto number). When the rental is taken out the date of checkout is recorded along with calculated due date (7 days from checkout date). When the rental is returned, the date is recorded in the returned date.