UML Class Diagram - Create an OWL Vocabulary - Computer Science Assignment Help

Assignment Task :

The UML class diagram above depicts an employment domain. It describes types of employees along with different types of appointments they can be appointed to and the various aspects of these appointments (position, schedule, and salary). As a reminder about UML class diagrams:

• The direction of the arrow between classes indicates a subclass relationship (e.g., Regular Employee is a type of Employee).

• The label and the direction of the edge indicates the type and domain/range constraints between classes (e.g., Appointment is assigned to Position, Appointment has appointee Employee).

Apt: appointment

FT: full-time

LTH: less-than-half time 

Temp: temporary

Other domain constraints:

• Less than half-time schedules cover less than 20 hours per week.

• Temporary appointments are in effect for less than 90 days. 

• Level 1 salaries are at least $15000.

1. Using the Protégé editor, create an OWL vocabulary that models the 19 classes and four associations depicted on the UML class diagram above. Enforce the domain and range constraints. You do not need to use class equivalences to enforce the domain constraints above. (15 points)

2. For each of the following classes, also define the data properties below for recording details of instances and enforce domain and range constraints. (5 points)

   1. Employees have birth dates.

   2. Appointments have start dates.

   3. Schedules have hours per week.

   4. Salaries have amounts.

   5. Positions have titles.

3. Create an instance for each of the following classes: Less-than-half time schedule, Full-time schedule, Ongoing position, Temporary position, Salary, Appointment, and Employee. (10 points)

   1. All instances must supply data type property values to help distinguish them (i.e., consistent with the domain constraints above).

   2. Ensure that domain and range constraints are being followed. Instances must connect to instances of the appropriate range (or a subclass of that range) using the four object properties. 

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