Partners is continuing to work towards a V1.0 specification to submit for
adoption by the OMG in early 2005. In August, the Partners presented
a major update of the specification from the initial submission presented in
January 2004. The Partners presented the revised submission for
the SysML specification V0.85 to the OMG on November 3 at the
The SysML presentation to the ADTF provided a status
update from the revised submission presented to the ADTF in
a) drive towards a stereotype solution versus metaclass extensions
b) improve UML 2 compatibility (e.g. reuse of UML 2 structured class and ports)
c) simplify and refine the spec
At the last SysML Partners meeting in
Because there are still outstanding technical issues from the vendor feedback, a motion was requested and passed to present a third revised submission of SysML to the ADTF at the OMG Burlingame meeting in February 2005, with the goal of intiating adoption in early 2005.
The OMG meeting in DC was held in conjunction with the INCOSE Mid Atlantic Regional Conference (INCOSE MARC 2004). There were several SysML related activities including:
- Key note presentation by Richard Soley, who is the OMG CEO, on Leveraging MDA for Model Driven Systems Engineering. His presentation can be found at: http://www.omg.org/~soley/mdase.ppt
Presentation (a variant of what was presented in
- Panel on
SysML and DoDAF including panel members Alan Moore, Bran Selic, Bruce Douglass,
Fatma Dandeshi, Sandy Friedenthal . Fatma
presented a proposed roadmap for aligning SysML and DoDAF, and discussed the
intent to issue an RFI for SysML/DoDAF Standardization at the
- First SysML tool demonstrated (Artisan Real Time Studio).
These events were very positive in terms of highlighting the interest and direction of SysML, and highlighting the potential synergy between the OMG's Model Driven Architecture (MDA) initiative and Model Driven Systems Engineering.
The SE DSIG
is planning to meet at the OMG meeting in
The Systems Modeling Language (SysML) is an extension of UML 2 that will support the specification, analysis, design, verification and validation of complex systems that include software-intensive, information-intensive, and physical systems. A summary of SysML extensions include the following:
a) extensions to activity diagrams to support enhanced functional flow block diagrams and continuous behavior modeling
b) minor refinements to the UML 2 composite structure diagram, which in SysML is called an assembly diagram, that provide a more general purpose capability for modeling structure including system hierarchy, interconnection and flows between components.
c) a new requirement diagram to bridge the design models with requirements management tools by providing a model of requirements and their relationships, including a trace relationship between requirements, a satisfy relationship between a requirement and design/implementation elements, and a verify relationship between requirements and verification elements suchas test cases.
d) a new parametric diagram to bridge the specification and design models with analysis tools by providing a model of parameters and the constraints between them, such as F=ma.
e) a generic allocation relationship that can be further specialized to support multiple types of allocation, including behavior to structure and logical to physical elements.
f) alignment between AP-233 and SysML. This is initially focusing on the alignment between the SysML requirement diagram and AP-233 requirements module, but the approach that is being demonstrated is intended to support alignment of the two standards as they evolve over time.
For a more detailed overview of SysML, refer to the
paper presented at the INCOSE Symposium 2004 in
Lockheed Martin Corporation