Re: circular relationships ok?
Date: Thu, 02 Mar 2006 17:46:26 +0100
Message-ID: <du77h2$1cq$1_at_nntp.fujitsu-siemens.com>
Alexandr Savinov schrieb:
> A model with cycles is not a concept-oriented model (theoretically). It
> is a strong constraint but it is part of the definition. Then the
> question is if it is useful or not. For any model there are examples
> which are non-trivial and very difficult to implement. Loops and cycles
> can be always avoided by introducing a common subconcept. If A and B
> mutual reference each other then we introduce a common subconcept C:
>
> A B
> \ /
> C
Ok, here goes:
Net<-------\
(* denotes "zero or more")
How would you do it?
| |
V |
Constraint*|
| |
V |
Token* |
/ \ |
| -----/
V
Constant
("Token" refers to either a constant or a Net, not both.)
Maybe I'm blind but I simply don't see it.
My problem is that the relations are directed. A Nrt doesn't
Lots of Greetings!
Volker
Received on Thu Mar 02 2006 - 17:46:26 CET