At the time of analysis designing of object oriented, the object domain and static structure inside the system and the figure which shows the relationship between class. Among today,there is manya thing which says the class figure of UML.
As for the UML class figure, in order for method of kind of using which grows class gradually according to development process to be possible, the point where it is considered with feature, from the conceptual design to behavior specification and the detail design is utilized variously with each phase. To display the class of conceptual level, class name just is recorded inside rectangle, but at specification level dividing rectangle, it adds also attribute and operation. At mounted level furthermore detailing, it keeps describing the information which is necessary for mounting.
Pulling the line (pass) between rectangle and the rectangle which display class it expresses the relationship (relationship) of class, related name and role name, records multiplicity and the like on side of the line and makes the relationship of that clearer.
Inscription related to is between the class in the UML class figure, as follows.
Relation (assosiation)
The fact that it is relationship between class and class is shown.
Induction possibility (navigability)
The fact that it has the reference to the other class which it is related from a certain class is shown.
Gathering and summarizing (aggregation)
The fact that a certain class consists combination of other class is shown. The class which displays the element disappearing, as for the class which displays the whole, it is used in the kind of relationship which does not disappear.
Composition, compound and synthesis (compositioin and composit aggregation)
The fact that a certain class consists combination of other class is shown. It forces from gathering and summarizing and shows the relation, it is used in relationship of kind of those where formation and disappearance of two classes of whole/part agree.
Dependence (dependency)
The dynamic temporary kind of relationship where modification of a certain class exerts influence on other class is shown.
Pan- conversion and popularization (generalization)
General class (superclass) relationship of concrete class (subclass) is shown.
Realization and actualization (realization)
Relationship of the class which displays specification between the class which actualizes that is shown.
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