James Weinheimer wrote:

> Designers of relational databases want
> to make their databases as efficient as they can, and one way to do that
> is by eliminating as much duplication as possible. This is what FRBR
> proposes.

No, the FRBR model uses the language of entity-relationship models.  But that 
model is being used to illustrate the relationships of the elements.  It's a 
language for understanding the data.  But the model isn't talking at all about 
the structures of data storage.  Not one bit.  That is not what it's concerned 
with!  FRBR doesn't care if you keep the subject information (name of the 
subject, etc.) in a single record, not duplicated anywhere else, or copied in 
full into the records for every work, expression, and manifestation it's 
related to.  That is irrelevant to what FRBR is talking about.  FRBR isn't 
about database efficiency; it's about knowing what the pieces of data are, what 
they mean, and how they relate.

Kevin M. Randall
Principal Serials Cataloger
Northwestern University Library
(847) 491-2939

Proudly wearing the sensible shoes since 1978! 

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