What is a state machine, What is a state machine and

What is a state machine

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CSI6207 Systems Analysis and Database Design - Edith Cowan University

1. What is an "attribute" of an object? List 3 possible attributes of a "Vehicle" object.

2. What is "Cardinality" or "Multiplicity" in object relationships and why is it important?

3. Describe the difference between an "Aggregation" relationship and a "Composition" relationship in a UML class diagram.

4. Give three examples of objects that could inherit from a superclass.

5. Why are many to many cardinalities allowed in a UML class diagram but not in an entity relationship diagram?

6. What is a state machine?

7. What is a foreign key used for? Give an example of a foreign key and how it could be used.

8. Is it necessary to include primary keys in an object? Why/why not?

9. Is it necessary to include primary keys in an entity? Why/why not?

10. Name five entities that might appear in the ECU Blackboard system.

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Reference no: EM132961546

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