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Defining associations
98
Association properties
An association has the following properties:
Property
Description
Maximum
length
Name
Name of the association
254
Code
Reference name for the association
254
Comment
Descriptive comment for the association
—
Stereotype
Subclassification of an association derived from
an existing one. Extends the semantics of an
association without changing it's structure
—
Aggregation/
composition
Indicates whether the association is an
aggregation or a composition
—
Role A
One end of an association. Each role can have a
name and a cardinality. You can make a role
navigable or not, or change its visibility
254
Role B
One end of an association. Each role can have a
name and a cardinality. You can make a role
navigable or not, or change its visibility
254
Multiplicity
Minimum and maximum number of instances that
the association can have
—
Ordering
Indicates that the association is included in the
ordering that sorts the list of associations by their
order of creation.
—
Navigable
Indicates whether or not information can be
transmitted between the two objects that are
linked by the relationship
—
Changeability
Specifies if the value of the association can be
modified or not once the object has been
initialized
—
Visibility
Visibility of the association, whose value denotes
how it may be seen outside its enclosing name
space
—
Содержание Powerdesigner 7.5
Страница 1: ...OBJECT ORIENTED MODEL User s Guide POWERDESIGNER 7 5...
Страница 8: ...viii...
Страница 22: ...Defining OOM properties 12...
Страница 97: ...Chapter 2 Building an Object Oriented Model 87 4 Modify the operation display preferences 5 Click OK...
Страница 144: ...Defining check parameters 134...
Страница 208: ...Generating for XML 198 6 Click OK An XML file is generated with the file extension xml...
Страница 210: ...Customizing scripts 200...
Страница 224: ...Generating a CDM from an OOM 214...
Страница 238: ...Generating a PDM from an OOM 228...
Страница 260: ...Object language editor categories 250...
Страница 268: ...Applying business rules to objects 258...
Страница 288: ...278...