Re: [ontolog-forum] Defining UML in Common Logic

[Duane Nickull <dnickull@xxxxxxxxx>]

Yeah – we ran into inconsistency patterns with UML – XML.  For example, in a CVD you can have cardinality on attributes of a class that range from 0-*.  In XML attribute names must be unique.

I feel guilty for having worked on standards for over a decade sometimes.  Time to go watch the Canada USA Ice Hockey game at the Olympics (in my home town) until I feel better about it!!

Duane


On 2/20/10 7:26 PM, "John F. Sowa" <sowa@xxxxxxxxxxx> wrote:

> Duane,
>
> I agree:
>
>  > UML is only one of many ways to represent logic or models.
>
> The point I make is that there is no one-size-fits-all notation
> for everything.  Different notations -- graphic and linear --
> have different advantages and disadvantages for different purposes.
>
> Remember that what was "unified" by the U of UML was the
> squabbling among the "Three Amigos" who were using different
> notations for related design methodologies.
>
> The various diagrams came from many different sources.  Some
> of them go back to the 1960s (Entity-Relationship diagrams
> by P. P. Chen in 1976 were a variant of Bachman diagrams
> from a decade earlier.)  Drawing type hierarchies as trees
> goes back to Porphyry in the 3rd century AD.  And activity
> diagrams go back to Carl Adam Petri's PhD dissertation in 1965.
>
> All those diagrams represent important aspects that could
> also be represented in logic at the object level or the
> metalevel.  E-R diagrams, for example, represent the signature
> of various relations, the number of arguments, the types of
> the arguments, and the functional dependencies and cardinality
> constraints.
>
> All those notations can and should be better integrated with
> each other and with methodologies from other paradigms.
>
> John
>
>
>
>
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