(c) Bruce Powel Douglass, Ph.D. 2019

Mar 7, 2018

Welcome to the Modeling Forum

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This is a forum intended for discussions of model, especially with UML, SysML, UPDM, UAF and related technologies.

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  • I noticed a slight change in naming convention for interfaces. Which one is the current standard or recommended guidance? In the Harmony Deskbook 4.1: Interfaces names should be referenced to the sender port. Naming convention: i<Sender>_<Receiver>. In Harmony MBSE Modeling Standards for use with UML, SysML, and Rhapsody: Interfaces shall be named in terms of their semantic concept (e.g. iNavData or FLIRCommands) and their names shall be prefixed with a lower case 'i'.
  • I've noticed in many books, papers, and model examples that many name their roles in a lowercase fashion and as an abbreviation of the original classifiers. Where did this convention come from and are there other naming conventions? Example from the SysML 1.5 standard: https://www.omg.org/spec/SysML/1.5/PDF See page 234, Figure D.19 - Internal Structure of the Power Subsystem (Internal Block Diagram There is "fp" for FuelPump or "trsm" for Transmission. Finally, when documenting our models, in any tool you can provide a description for parts as well as classifiers. I was wondering what the difference is when documenting part and classifiers. I end up usually copying and pasting the description of the classifier into the part as well, but perhaps that is not accurate. For example, in the description for FuelPump you write "The Fuel Pump block is etc. etc." In the IBD diagram, for the part "fp", the descrption would also be "The Fuel Pump block is etc. etc." Something doesn't seem right there, but I have no criteria for differentiating.
  • In the Harmony Deskbook there are ActorPins that send events which trigger certain actions in an activity diagram. If I am using UML 2.0, is there a way to model this?