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Unit 5: Advanced Class Modelling – II
Figure 5.10 describes the TravelAwards package. A customer may have multiple frequent flyer Notes
accounts. Airlines identify each account with an account number. An account may receive
numerous frequent flyer credits. Some frequent flyer credits pertain to flights; others (indicated
by creditType) concern adjustments, redemption, long distance mileage, credit card mileage,
hotel stays, car rental, and other kinds of inducements to patronize a business.
Figure 5.10: An Object Model for the TravelAwards Package
Source: http://www.pearsonhighered.com/assets/hip/us/hip_us_pearsonhighered/samplechapter/
0131238299.pdf
Figure 5.11 describes the BaggageHandling package. A customer may check multiple bags for a
trip and receives a claim ticket for each bag. Sometimes a bag is lost, damaged, or delayed, in
which case the customer completes a baggage complaint form for each problem bag.
Figure 5.11: An Object Model for the BaggageHandling Package
Source: http://www.pearsonhighered.com/assets/hip/us/hip_us_pearsonhighered/samplechapter/
0131238299.pdf
Self Assessment
Fill in the blanks:
11. A ........................ is a group of elements (classes, associations, generalizations, and lesser
packages) with a common theme.
12. The notation for a package is a box with the addition of a ........................
13. The ........................ of a class is the set of classes reachable by one or more paths terminating
in a combined multiplicity of “one” or “zero or one.”
14. A ........................ is a sequence of consecutive associations and generalization levels.
15. The purpose of the logical horizon is to compute the ........................ that can be inferred
from some starting object.
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