OBASHI - Characteristics - Rules

Rules

The OBASHI Framework comprises the following rules which govern the implicit and explicit relationships between elements.

    1. An element placed beneath or above another element has an implicit relationship with that element.
    2. All elements within the same layer have an implicit relationship to each other.
    3. Connected elements have an explicit relationship to each other, with the following rules governing connectivity:
      1. A connection is a bi-directional relationship
      2. An Infrastructure element may be connected to one or more Infrastructure or Hardware elements.
      3. A Hardware element may be connected to one or more Infrastructure or System elements.
      4. A System element may be connected to one or more Hardware or Application elements.
      5. An Application element may be connected to one or more System, Application or Business elements.
      6. A Business element may be connected to one or more Application, Business or Owner elements.
      7. An Owner element may be connected to one or more Business or Owner elements.
    4. A dependency is a uni-directional relationship i.e. element X may be dependent on element Y, but element Y might not be dependent on element X.
    5. An element may have one or more instances within a layer.
    6. An element can exist on more than one OBASHI diagram.
    7. A dataflow comprises two or more connected elements.
    8. A dataflow can contain one or more dataflows, enabling a hierarchy of dataflows.
    9. A dataflow may span multiple Business and IT diagrams.

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