Assignment - RowHill Airport Management System
Computer Sciences Department frequent fliers have been complaining to RowHill Airport officials about the poor organization at the airport.
As a result, the officials decided that all information related to the airport should be organized using a DBMS, and you have been hired to design the database.
Your first task is to organize the information about all the airplanes stationed and maintained at the airport. The relevant information is as follows:
- Every airplane has a registration number, and each airplane is of a specific model.
- The airport accommodates a number of airplane models, and each model is identified by a model number (e.g., DC-10) and has a capacity and a weight.
- A number of technicians work at the airport. You need to store the name, SSN, address, phone number, and salary of each technician.
- Each technician is an expert on one or more plane model(s).
- Traffic controllers must have an annual medical examination. For each traffic controller, you must store the date of the most recent exam.
- All airport employees (including technicians and traffic controllers) belong to a union. You must store the union membership number of each employee. You can assume that each employee is uniquely identified by a social security number.
- The airport has a number of tests that are used periodically to ensure that airplanes are still airworthy. Each test has a Federal Aviation Administration (FAA) test number, a name, and a maximum possible score.
- The FAA requires the airport to keep track of each time that a given airplane is tested by a given technician using a given test. For each testing event, the information needed is the date, the number of hours the technician spent doing the test, and the score that the air plane received on the test.
Use the description provided above about RowHill Airport. You can make your own assumptions based on the requirements given. However, the assumptions should be clearly indicated / defined. Answer following questions.
Provide the following:
1. Identify business rules. List at least FIVE business rules you have identify in the specified domain.
2. Design the database using Entity Relationship (ERD) Diagram. Clearly indicate entities, attributes, relationships, cardinalities, primary keys and other special types of attributes relationships (e.g. multivalued attributes/ ISA relationships, etc).
Note: Use correct symbols. If the symbols are incorrect your diagram cannot be considered as correct. You could use either crow's foot or Chen's ERD rules. However, do not mix both.
And you should draw the ERD diagram using Computer Aided Tool. You may use Lucidchart, word MS Visio or similar tool.
3. Develop relational schemas. Relational schemas should be derived using the ERD. You should map cardinalities correctly from ERD to Relational Schema.
4. Identify primary and foreign keys and clearly indicate them in the relational schema.
You should clearly indicate the referential integrity constraints (primary and foreign key relationships) using arrows. Clearly indicate datatype for each attribute.
5. Perform Normalization (including 3rd Normal form). In each normal form mention what you would consider and clearly show how would you remove redundancies. Should clearly indicate how relational schemas are changing and how would you adjust referential integrity of the schemas.
6. Write 5 queries with where clause that would think used by the company. You are required to write what the functionality of each query. You will not be given marks, If you failed to explain what each query does.