SMM 1.1 RTF Avatar
  1. OMG Issue

SMM11 — Allow multiple operations for a direct measure (multiplicity 0..*)

  • Key: SMM11-126
  • Legacy Issue Number: 17474
  • Status: closed  
  • Source: VDMbee ( Henk de Man)
  • Summary:

    Allow multiple operations for a direct measure (multiplicity 0..*). In addition add attribute “type” (String) to DirectMeasure. When “type” is filled, it corresponds to observation type

  • Reported: SMM 1.0 — Fri, 13 Jul 2012 04:00 GMT
  • Disposition: Resolved — SMM 1.1
  • Disposition Summary:

    The RTF discussed this issue (at length) and found a resolution which addressed the core concern within the issue while preserving the general design pattern of SMM. The following was considered to further variations of Operation:
    • Instead of one Measure with multiple Operations, it fits SMM better to use multiple Measures, each with one Operation, and all for the same Charactersitic (trait).
    • These multiple Measures might be stored in a MeasureLibrary of structured Measures, and might be the operational counterparts of a less structured or informal Measure (typically a NamedMeasure) in another MeasureLibrary. That informal Measure might be referenced by the others as their “source” (for traceability reasons). A “source” attribute might be added to Measure to support this. This will also generally enable Measure maintenance, whereby e.g. a library of informal Measures, possibly obtained as standard industry Measures, are worked into multiple more structured (and operational) Measures in other MeasureLibraries.
    Hence, the resolution is to add “source” (string) as property to Measure.

  • Updated: Wed, 8 Jul 2015 11:44 GMT