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Re: FW: FpML-AWG View generation syntax



I agree that we should copy standard terminology, but I don't believe that "conceptual model" is appropriate here. There is nothing very conceptual about the master Schemas. If anything, they are superset Schemas, and I think it is better described as that. They are no more "logical" or "conceptual" than any of the individual view Schemas, they are just broader in scope.

Cheers, Tony.

On Thu, 20 Dec 2007 02:29:17 -0000, <matthew.d.rawlings@xxxxxxxxxxxx> wrote:

I suggest the document adopts standard modelling terminology:
The 'master schema' is a Conceptual Model. Its perspective or view is the
global context.
Each 'view' is a Context and its resulting schema is a Logical Model. Its
perspective or view is a local context.

It is common in conceptual modelling to leave the cardinality/multiplicity
of Properties (elements, attributes, references) undefined. The
cardinality is added in during the transformation from the Conceptual
Model to the Logical Model - i.e. the 'view' generation process adds
cardinalities for the first time. This for example is what ISO20022 does
in the generation of the local views (Message Layer) from its global view
(Business Layer).

It is also common in conceptual modelling to localize names of classes and
properties in the transformation to the Logical Model (local context
views). I suggest that as this is such a common operation this be
supported explicitly.

Matthew Rawlings
+44 7917 596

--
Anthony B. Coates
Senior Partner
Miley Watts LLP
Experts In Data
UK: +44 (20) 8816 7700, US: +1 (239) 344 7700
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Data standards participant: genericode, ISO 20022 (ISO 15022 XML), UN/CEFACT, MDDL, FpML, UBL.
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