Car Air Conditioning Diagram
UML associations?
Assignment UML diagram: The car is inherited from a base class of vehicles known that contains things such as model, year, and doing. The car parts that must be for work that includes classes: engine, wheels, etc. (Things that are necessary). It also has some classes that can stand on their own and are not necessary for the car to work, but they can work on their own which includes: radio and air conditioning. A class driver interacts with the class of car and it has subclasses called chaufeur including company to which the person works for and the citizen (the ordinary person who drives a car). These classes inherit from one base class. Not asking you to write it. not sure what kind of associations are needed between all types of diff classes. Thank you
Drawing would be much easier. The reason for UML is away to try to describe things with text. After all, most engineers are visual people. Now, to answer your questions: 1. When you say "to A," you talk about associations. Associations are available in three flavors: regular associations, aggregations, , and compositions. All the elements you mention (wheels, engine, radio, air condition) can be one of those. What determines the relationship is knowing how and where objects are created. If the car creates (new) and destroyed (delete) objects, then use composition (filled diamond). If the car should have a role, but it creates another class (eg, theFactory) aggregate use. IMPORTANT – If you use aggregation, you Car class needs to confirm that the objects exist before using them, otherwise the pointers / references are null and accidents code. BTW: in your example, I would use the aggregation of all classes. 2) The car driver and the question: What makes a person drive? The relationship (association) with a car. Can we do anything Chauffeur driver can not? Probably not. Therefore, you do NOT have a relationship between driver and car because the driver has this link. If you need additional assistance, please send me an email. In addition, if you need a good UML tool, you can get Rhapsody on a free trial of 30 http://www.telelogic.com/contact/buy_try.cfm. It is a wonderful tool for generating code that fails to complete your model. You can also get a free modeler there, but only for viewing.
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