Artifact:
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An Implementation Subsystem is a set of Implementation Elements. Implementation Subsystems structure the Implementation Model by dividing it into smaller parts that can be separately integrated and tested. | ||
Other Relationships: |
Part Of Implementation Model
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Role: | Implementer | |
Optionality/Occurrence: | Recommended. Elaboration phase. | |
Templates and Reports: |
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Examples: | ||
UML Representation: | Package in the implementation model, either its top-level package, or stereotyped as <<implementation subsystem>>. | |
More Information: | ||
Input to Activities: | Output from Activities: |
The following people will use the implementation subsystem:
The implementation subsystem is the physical analogue of the design package. The implementation model and the implementation subsystems are initially defined in the implementation view, and so are of primary importance at development time.
Property Name | Brief Description | UML Representation |
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Name | The name of the subsystem | The attribute "Name" on model element |
Brief Description | A brief description of the role and purpose of the subsystem | Tagged value, of type "short text" |
Implementation Elements | The Implementation Elements directly contained in the subsystem, including files and directories. | Owned via the meta-aggregation "owns" |
Relationships | The relationships directly contained in the subsystem | - " - |
Diagrams | The diagrams directly contained in the subsystem | - " - |
Implementation Subsystems | The subsystems directly contained in the subsystem | - " - |
Import Dependencies | The import dependencies from the subsystem to other subsystems | Owned by an enclosing subsystem, via the meta-aggregation "owns" |
The software architect defines the subsystems during Elaboration, and allocates them to individuals or teams. This is done before class implementation is started, and thus enables parallel development of subsystems.
An implementer is responsible for the subsystem, and ensures that:
The implementer responsible for an implementation subsystem is also responsible for the public (visible) elements of the subsystem.
It is recommended that the implementer responsible for an implementation subsystem is also responsible for all its contained elements; for more information see Artifact: Implementation Element.
If a team of implementers develops an implementation subsystem, one of the team members should be responsible for the subsystem.
It is recommended that you use implementation subsystems. You have to decide how to map packages in design to subsystems and directories in implementation. You have to decide how many levels of subsystems you need.
Rational Unified Process |