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The administrators of Tiny College are so pleased with your design and implementation of their student registration/tracking system that they want you to expand the
The administrators of Tiny College are so pleased with your design and implementation of their
student registration/tracking system that they want you to expand the design to include the
database for their motor vehicle pool. A brief description of operations follows:
A brief description of operations follows:
Faculty members may use the vehicles owned by Tiny College for officially sanctioned travel.
For example, the vehicles may be used by faculty members to travel to off-campus learning
centers, to travel to locations at which research papers are presented, to transport students to
officially sanctioned locations, and to travel for public service purposes. The vehicles used for
such purposes are managed by Tiny Colleges Travel Far But Slowly (TFBS) Center.
Using reservation forms, each department can reserve vehicles for its faculty, who are
responsible for filling out the appropriate trip completion form at the end of a trip. The
reservation form includes the expected departure date, vehicle type required, destination, and
name of the authorized faculty member. The faculty member arriving to pick up a vehicle must
sign a checkout form to log out the vehicle and pick up a trip completion form. (The TFBS
employee who releases the vehicle for use also signs the checkout form.) The faculty members
trip completion form includes the faculty members identification code, the vehicles
identification, the odometer readings at the start and end of the trip, maintenance complaints
(if any), gallons of fuel purchased (if any), and the Tiny College credit card number used to pay
for the fuel. If fuel is purchased, the credit card receipt must be stapled to the trip completion
form. Upon receipt of the faculty trip completion form, the faculty members department is
billed at a mileage rate based on the vehicle type (sedan, station wagon, panel truck, minivan,
or minibus) used. (Hint: Do not use more entities than are necessary. Remember the difference
between attributes and entities!)
All vehicle maintenance is performed by TFBS. Each time a vehicle requires maintenance, a
maintenance log entry is completed on a prenumbered maintenance log form. The maintenance
log form includes the vehicle identification, a brief description of the type of maintenance
required, the initial log entry date, the date on which the maintenance was completed, and the
identification of the mechanic who released the vehicle back into service. (Only mechanics who
have an inspection authorization may release the vehicle back into service.)
As soon as the log form has been initiated, the log forms number is transferred to a
maintenance detail form; the log forms number is also forwarded to the parts department
manager, who fills out a parts usage form on which the maintenance log number is recorded.
The maintenance detail form contains separate lines for each maintenance item performed, for
the parts used, and for identification of the mechanic who performed the maintenance item.
When all maintenance items have been completed, the maintenance detail form is stapled to
the maintenance log form, the maintenance log forms completion date is filled out, and the
mechanic who releases the vehicle back into service signs the form. The stapled forms are then
filed, to be used later as the source for various maintenance reports.
TFBS maintains a parts inventory, including oil, oil filters, air filters, and belts of various types.
The parts inventory is checked daily to monitor parts usage and to reorder parts that reach the
minimum quantity on hand level. To track parts usage, the parts manager requires each
mechanic to sign out the parts that are used to perform each vehicles maintenance; the parts
manager records the maintenance log number under which the part is used.
Each month TFBS issues a set of reports. The reports include the mileage driven by vehicle, by
department, and by faculty members within a department. In addition, various revenue reports
are generated by vehicle and department. A detailed parts usage report is also filed each month.
Finally, a vehicle maintenance summary is created each month.
Given that brief summary of operations, draw the appropriate (and fully labeled)
ERD. Use the Chen methodology to indicate entities, relationships, connectivities,
and cardinalities
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