CIS 644 Tues. Sept. 7, 1999

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CIS 644 Tues. Sept. 7, 1999 blank



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Email question what model notation?? Answer
varies pure UML . Prob. Domain level
w or w/o aggregation w or w/o
numbers owns symbol
implementation level
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Problem Auto agency PD model features
defined by manufacturer autos arrive,
sold, have features customers select
feature preferences
can buy or order autos auto orders
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Issues features dont hard code dyanamic
attributes PD / implementation level 4
each Collections Auto vs Autos . 4
each
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?? Ambiguous / unknown requirements can
customer order multiple autos? Strategy
first build simple requirements
model identify requirements questions (and
recommendations)
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Objects/classes vs methods classes define
objects. Objects have retained state.
(generally nouns) what about arrive ,
search or match generally methods
advanced class factories
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Generalization of common base classes
as. Customer --gt Person
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how to name relations by domain vocabulary
purchaser generic, as theCustomer how
to implement relations by reference static
or dynamic by key . dynamic by copy

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Class diagrams one class may represent
several objects ! E.g. Airports
(generally static structure) VS object
diagrams instances of class diagram
(may be different views for different cases)
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Redo Auto class diagram (w annotations) use
some drawing tool.
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Make reservation scenarios partial view
p. 23 overview scenario w/o parameters
supported by detail scenarios with parms



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Do overview scenario for find matching
car and place
order
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