Chapter 3 Building Structural Diagrams
A composite structure diagram is a UML diagram that contains classes, interfaces, packages, and their relationships, and that provides a logical view of all, or part of a software system.
A composite structure diagram performs a similar role to a class diagram, but allows you to go into further detail in describing the internal structure of multiple classes and showing the interactions between them. You can graphically represent inner classes and parts and show associations both between and within classes.
The example below represents the internal structures of the classes TitleSql (which contains two inner classes) and TitleImp (which contains two parts), and how they are connected via the interfaces dmlAccess and java.sql.connection1:
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