Textual xtUML

Dear Modelers, Significant progress has been made on a specifications of textual xtUML and separately of graphics.  This note concerns the specification of textual semantic xtUML.  This spec will serve a few purposes. It specifies a full notation of structural Shlaer-Mellor textually. It specifies how models will be persisted under BridgePoint (supplanting the OOA of […]

How Shall I Persist?

Persisting Model Data How should model data be persisted?  Should it be persisted as instances of the metamodel (directly mappable but not readable) or as human-readable, parsable text?  This presentation gives a balanced argument both ways.  Read it; it is important! HowShallPersist

xtUML Days 2021 Presentations

xtUML Days 2021 Presentations xtUML Days 2021 was held via Zoom 27 October 2021 Analysis and Modeling of Software Systems with Shlaer-Mellor (xUML) – Leon Starr (keynote) XTU – An Open Source Framework for Hand Coded Executable UML Models – Nils Paulsson Implicit Bridging with Domain Specific Languages – Campbell McCausland Persistent Shlaer-Mellor Modeling – […]

Time and Clocks

Here is a link to a Leslie Lamport paper on Time in distributed systems.

Introducing the Shlaer-Mellor Commons

Members of the Shlaer-Mellor community met to review the formation of the Shlaer-Mellor Commons.  The Shlaer-Mellor Commons exists to foster a community of collaboration, camaraderie and advocacy around the method, models and tooling. This meeting began with a short update on planning for the xtUML Days 2021 conference, and then the bulk of the meeting […]

xtUML Days 2018 Presentations

xtUML Days joined forces with MODELS’18 to provide an opportunity to mingle the communities. Here are all of the presentations (that could be released): Day 1 Flyer (agenda) Shlaer-Mellor xtUML Overview Shlaer-Mellor OOA Original Overhead Transparency Intro Big Machine Big Model – Modeling Industrial Machinery 1-3-5 Application, Dialects, Architectures Constraint Modeling with Albert Einstein xtUML […]

xtUML Days at MODELS

xtUML Days 2018 is co-located with MODELS in Copenhagen in October.  MODELS is increasing its focus on Industrial Modeling while maintaining the academic and research strength of the conference.  The graphic highlights the different industrial opportunities at MODELS this year.

Presos from xtUML Day Cheltenham

Presentations from xtUML Days 2017 Cheltenham This episode of xtUML Day was a step up from previous meetings and increased participation from the community. Here are all of the presentations (that could be made available): xtUML 2017 Cheltenham Flyer (agenda) Show and Tell Community Engagement Build and Test Infrastructure Recursive Referentials and Polymorphic Events xtUML Type […]