On Sun, Apr 11, 2010 at 12:21:28AM -0400, Gary wrote:
> Most of the information about mutilple tables deals with the retreval of
> data from, not inserting into, meaning they are more used for known data
> inserted by the database owner/administrator to be retrieved by queries into
> the DB.
> Am I on the right track?
Yes. The emphasis on multiple tables is mostly to ensure data integrity.
It goes back to the beginning of relational databases. And where you
have multiple tables, the most difficult task (and the one which takes
up the most pages in texts) is queries on those multiple tables.
Insertions are considered elementary, and they are typically done one
table at a time. You'll notice the syntax for queries is considerably
more complex than that for inserts, because the task is more complex.
Paul M. Foster
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