> There's a lot of reasons to de-normalize - table size/ query
> performance etc. - but it should never be done without
> good reason. AND is easy - OR is hard.
But, unlike many other database software packages, particularly desktop DB
packages, you can denormalize in queries, and have those queries still be
updateable So, in Access, there are far fewer times that it is useful to
have a denormalized table, or to denormalize into a temporaty table.
Larry Linson
Microsoft Access MVP