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2.2 Representation of the Reference Model of an SDE  

  • 2.2 Representation of the Reference Model of an SDE
  • 2.2.1 General Service Complexes
  • 2.2.2 Service Complexes for the Support of the V-Model Activities
  • 2.2 Representation of the Reference Model of an SDE

    Next, the SDE corresponding to the V-Model will be described by means of a reference model-in short SDE reference model. The structure of the SDE reference model corresponds to the structure of the ECMA reference model [1]; however, it is more detailed in various parts. The SDE reference model particularly formulates precise requirements for the generation of software, the requirements for quality assurance, configuration and project management, in accordance with the V-Model and with the help of the service units. The ECMA reference model only contains very vague or no explanations about these items. In some parts, the "Frameworks" [1] the two reference models deviate with regard to details. A complete comparison between the SDE reference model represented with the help of the service units and the ECMA reference model can be found in Annex B.

    The SDE reference model differentiates between two categories of service units:

    The service units in question correspond to the "Frameworks" in the ECMA model. In the following paragraphs, they are referred to as general service units.

    Fig. 2.2 illustrates a preliminary structure of the SDE whereby the service units of both categories are combined into service complexes.

    Next, the individual service complexes will be briefly characterized.

    2.2.1 General Service Complexes

    Object Management

    The service complex "object management" defines the platform

    The object management furthermore guarantees

    in the SDE. The impact of object management on the degree of integration to be achieved in an actual SDE is very great.

    Figure 2.2
    Figure 2.2: Structure of the SDE Reference Model

    User Interface

    This combines the following services:

    Workflow Management

    The interaction of all V-Model activities are controlled here. This service complex particularly handles the application of all tools used to realize the service complex "V-Model". Thus the SDE users have access to all other service units, dependent on the context.


    This service complex comprises functions for: The general service complexes of the SDE reference model are of particular importance if the integration of tools from different manufacturers is to be realized with regard to

    2.2.2 Service Complexes for the Support of the V-Model Activities

    Software Development

    This service complex comprises all support functions for the generation of software according to submodel SD of the V-Model. This also refers to the function structuring, to process modeling, information structuring, generation of databases, etc.

    Quality Assurance

    The services for the static and dynamic assessment of products are combined here. Constructive measures with regard to quality assurance are part of other service complexes (in particular part of service complex System Development).

    Configuration Management

    Service complex "Configuration Management" comprises support functions for the configuration planning and control as well as for the version management.

    Project Management

    The services are combined for the following tasks:

    Technical elements required for the operation of a computer-based SDE, like computer architecture, network system, office communication, are not described in the SDE reference model. Hardware characteristics have not been considered since only functional requirements are defined in the SDE reference model.

    Just as little, services beyond those for a certain project like

    are not taken into consideration.

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