I'll comment a little more on the DW vs OLTP question...
I worked on a Data Warehouse project for several years and then about 12
months ago changed to an OLTP project. There are differences between the
two, but nothing too radical...
Writing DW queries you probably need to know a lot about various ways to
join tables, how to perform complex aggregation, etc.
Writing OLTP queries you are more likely to need to get into a table and
grab a row real quick - indexing can become very significant, knowing how
to write where clauses to use indexes, etc.
Some configuration parameters are very different as well - Sort area
sizes, rollback sizes, etc.
Finally with DW there are often two distinct aspects... The batch
processes which load the warehouse, and the online user queries. In OLTP
there is typcially a lot less batch processing, but there may be complex
archiving processes, etc depending on the system.
At the end of the day though the basic requirement is the same... Someone
has a question, Oracle has the answer, your job is to get Oracle to provide
the answer asap.
Cheers,
Mark.
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<---->>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
Privileged/Confidential information may be contained in this message.
If you are not the addressee indicated in this message
(or responsible for delivery of the message to such person),
you may not copy or deliver this message to anyone.
In such case, you should destroy this message and kindly notify the sender
by reply e-mail or by telephone on (61 3) 9612-6999.
Please advise immediately if you or your employer does not consent to
Internet e-mail for messages of this kind.
Opinions, conclusions and other information in this message
that do not relate to the official business of
Transurban City Link Ltd
shall be understood as neither given nor endorsed by it.
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<---->>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
--
Please see the official ORACLE-L FAQ: http://www.orafaq.net
--
Author: Mark Richard
INET: [EMAIL PROTECTED]
Fat City Network Services -- 858-538-5051 http://www.fatcity.com
San Diego, California -- Mailing list and web hosting services
---------------------------------------------------------------------
To REMOVE yourself from this mailing list, send an E-Mail message
to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in
the message BODY, include a line containing: UNSUB ORACLE-L
(or the name of mailing list you want to be removed from). You may
also send the HELP command for other information (like subscribing).
