Re: Impossible Database Design?

>> Are you referring to 'Databases, Types and the Relational Model' by C.
J. Date, Hugh Darwen? <<

No, the book Bob refers to is from Morgan-Kaufmann and has gone out of print. It is not really very useful for a working programmer, since Date invented a language that not implemented for the book. It also uses a "Chronons" (discrete points of time) model for temporal data, which is rejected by virtually all of the temporal database academics because it fails to model time as a continuum.

A better and cheaper cholice would be to download the PDF book by Rick Snodgrass at the University of Arizona website. Rick has been doing temporal RDBMS work for over 20+ years and has actual SQL code in the major dialects in his book, as well as accepted theoretical basis. Received on Wed May 17 2006 - 06:42:42 CDT