This is to announce the release of the first specification for Heron at http://www.heron-language.com/spec.html. Heron is a textual representation of xUML that...
In the two xUML books that I own, i.e. Raistrick et at (the purple book), and Mellor and Balcer (the white book), it seems that "External Entity" stereotyped...
Essentially yes. They both represent things that are defined in other domains. Consequently some sort of bridging is called required. To me, the name "External...
Every so often it's good to be reminded of the fundamentals. Too often, as you say, people seem to think that meaning can only be found in procedural code....
I have updated the Google Knol <http://knol.google.com/k/leon-starr/how-to-build-articulate-uml-class-m\ odels/2hnjef6cmm97l/4#> link to include a download...
... I second Marc's praise. Leon's article is an excellent presentation on the importance of Data Modeling. Throughout my career I've consistently seen that...
Hi All Some time ago, I posted a question (message 704) to this list about Determinism/Non-Determinism in Executable UML, which Marc was kind enough to answer...
My quick stab at the question inserted below. I am hoping your question provokes some further discussion. ... I think the confusion may center around the...
The problem posed in question 704 <http://tech.groups.yahoo.com/group/executableuml/message/704> was Suppose you have a PIM expressed in Executable UML...
Hi Marc ... written, all 'send signal' actions occur at the end of the procedure's execution." You seem to be suggesting that the semantics of the Executable...
If by "suppose we made a rule", one means "suppose the modelers and architects on a given project together agree to make a rule for that project that said...",...
... I actually put that wording into the Wikipedia entry. I'm not sure what prompted me to use "deterministic system" vs "system", but the Wikipedia...
Hi Lee ... This is not true if the two objects are on different computers, and the signal and query mechanisms are implemented using different communication...
... What I meant was, if you use an architecture that ensures a strictly synchronous signaling mechanism on a single-threaded system (no side effects), then...
Yeah, we should all be contributing to this and related entries such as MDA, Domains, etc. I had been meaning to start an entry for Sally Shlaer as well....
Hi Lee ... Exactly. And if this is possible, the Wikipedia entry is wrong (or at least misleading). I would suggest that it be changed, to avoid trouble from...
... If ExecutableUML were truly deterministic it would no longer be useful for interacting with a physical world that was not in fact deterministic. I would...
Hi All Just to make my own point of view clear, and lest my position be seen as gratuitous pedantry: There are some languages that deal with concurrency but do...
On Thu, Oct 9, 2008 at 12:11 AM, Ashley at Metamaxim ... I would agree that it is misleading, perhaps even fundamentally so. Properly understood, any...
Hmmm... Somebody copied where a link would have sufficed. This is the actual problem that should be corrected. I posted as much to the discussion section of...
Someone's not clear on what's in which Domain. J From: executableuml@yahoogroups.com [mailto:executableuml@yahoogroups.com] On Behalf Of Lee Riemenschneider ...
... The TODO list in the discussion tab lists that examples need to be included. I haven't got around to adding any. Maybe a link to Leon's elevator model...
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