0 or more 19 what is the maximum multiplicity for the

 0 or more

 19. What is the maximum multiplicity for the association that reads an order
is placed by exactly one customer?
 20. What are some examples of multiplicity constraints?
 21. What are the three types of associations, and which is the most
commonly used?
 22. What are the three key parts of an entity relationship diagram (ERD)?

 23. Sketch a simple ERD that shows a team has zero or more players and
each player is on one and only one team.


 24. Sketch a semantic net that shows two teams and five players based on
your ERD.
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Team 1
Player 1 Player 2
Team 2
Player 5 Player 4 Player 3

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 25. What is a class, a domain class, and the key parts of a class diagram?
 A class is a category/classification of a set of “things”, or as I define it, a template used
to create/define an object. A domain class is a class that applies to the problem domain.
The key parts of a class diagram are the classes, their attributes, and their associations.

 26. What does a domain model class diagram show about system
requirements, and how is it different from an ERD?

 27. List appropriate UML class names by using the camelback notation for the
following classes: graduate student, undergraduate major, course instructor,
and final exam feedback.
 graduate student - GraduateStudent
 undergraduate major - UndergraduateMajor
 course instructor - CourseInstructor
 final exam feedback - FinalExamFeedback

 28. List appropriate UML attribute names for the following attributes: student
name, course grade, major name, and final exam quantity score.
 student name - studentName
 course grade - courseGrade
 major name - majorName
 final exam quantity score - final ExamQuantityScore

 29. Draw a simple domain model class diagram for the example in question
#23 where a team has zero or more players and each player is on one and
only one team.

 flip the 0..n and the 1

 30. What is an association class? Extend the domain model class diagram for
teams and players about to show a record of game statistics for each player
in each game.
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 31. In UML, what are three types of relationships found on a class diagram?