2. UML overview
The notations used here are based on UML 1.5, in force at the time of writing. Although a new version, UML 2.0, has been defined and is due to appear in tools at the end of 2004, this version has endeavored to ensure maximum upward compatibility. In practice, this means that the examples and elements used in this article will remain valid for this new version, which will only gradually enter industrial practice.
2.1 The different UML diagrams
UML offers a large number of different, complementary and coherent views of the same system. UML 1.5 offers nine main views, which can be grouped as follows:
• System-level description of user requirements: supported by use case diagrams.
• Description of the system's logical...
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