• From: Rick JELLIFFE <ricko@g...>
• Date: Mon, 23 Oct 2000 13:41:29 +0800

"Roger L. Costello" wrote:

> Any other thoughts on coupling/cohesion and how it applies to schema
> design?

I have a few of pages* on this in my book. It is just a summary of
Constantine & Yourdan's
levels of cohesion:
 coincidental
 logical association
 temporal association
 procedural cohesion
 communication cohesion
 sequential cohesion
 functional cohesion
Going from weakest to strongest.   

It is interesting that logical association is suggested as
a very weak coherence (and therefore a weak reason for things to
coupled) but it is often
the design principle behind some schemas, apparantly (RDF's syntaxes?)

Rick  Jellife



* see "Cohesion & Coupling" p 1-52, ch3 "Software Engineering" in "The
XML & SGML Cookbook",
Prentice Hall, 1998.

• References:
  • Re: XML Schemas: Best Practices
    • From: "Roger L. Costello" <costello@m...>
  • Re: XML Schemas: Best Practices
    • From: "Roger L. Costello" <costello@m...>
  • Re: XML Schemas: Best Practices
    • From: "Roger L. Costello" <costello@m...>

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