(a) An Employer has one or more Employees. An Employee has exactly one Employer. Employees have attributes for their name, salary and job title (b) We are producing a vehicle registration system for the local DMV/RMV. Model the following using a UML class diagram. Read the entire specification before proceeding (this is ONE question, broken into 4 segments for readability):
Using UML class diagrams, create a design for the following (you can defer declaring the types for any instance variables and instance methods as long as you represent the concepts appropriately).
NB: You may hand-draw your diagram or use a drawing program (your choice). Upload your finished answer for (a) and (b) as one file.
- (a) An Employer has one or more Employees. An Employee has exactly one Employer. Employees have attributes for their name, salary and job title
- (b) We are producing a vehicle registration system for the local DMV/RMV. Model the following using a UML class diagram. Read the entire specification before proceeding (this is ONE question, broken into 4 segments for readability):
(i) Our interface (protocol/contract) IVehicle states that all vehicles can register() and calculateExciseTax(). These operations are public and the Vehicle contract is stable – it will not change.
(ii) We think we’ll be able to take advantage of code-reuse, so your team must introduce an abstract class that implements the IVehicle interface (is-a-kind-of)
(iii) A Person concrete class may own zero or more Vehicles. A Person has a name and address as instance variables. Each Vehicle in our system must have one (and only one) owner. Despite what we said in (ii), we might refactor this design when we implement the code so you should avoid connecting the Person to an implementation element that might change.
(iv) Currently, there are three concrete types of vehicles: Car, Boat and Plane. Given what is described in (ii), place these in the appropriate location for your solution diagram
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