OASIS Mailing List ArchivesView the OASIS mailing list archive below
or browse/search using MarkMail.


Help: OASIS Mailing Lists Help | MarkMail Help

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

RE: Why Model Concepts? (Was RE: Object Role Modelling (ORM) or U MLor ??for designing Schemas)

Excellent!  Thanks Ken for saving some of us a lot of 
time in the weeds of discourse. :-)

The first paper is right on.  The second is a little 
foggy but generally, good conceptual models, transform 
schedules, and smart cacheing go a long way to 
achieving reuse AND performance.


Ekam sat.h, Vipraah bahudhaa vadanti.
Daamyata. Datta. Dayadhvam.h

-----Original Message-----
From: Ken North [mailto:ken_north@compuserve.com]

Different perspectives (conceptual schema, physical schema, user view) were
defined in the 70s by the ANSI/X3/SPARC Study Group on Database Management

This paper has an explanation:

conceptual model: description of the content, the structure, the rules, and
behaviour in a universe of discourse

This paper discusses the advantages of physical data independence in a
hypermedia context:

To unsubscribe from this elist send a message with the single word
"unsubscribe" in the body to: xml-dev-request@lists.xml.org