Jared, Thanks for the answer. I must admit my ignorance in terminology as for me data warehouse and data mart a pretty much the same thing except for size. I understand that data mart is smaller. The database I'm referring to could probably be described as data mart as it is going to be rather small - a gig or so maybe.
--- [EMAIL PROTECTED] wrote: > One philosophy of DW states that you build a DW that > is > fairly normalized, much like an OLTP database, > albeit one > with a temporal component and complete logging of > transactions > within the data. > > This is then used as a warehouse. The data from the > DW is used > to assemble data marts. These data marts are queried > by users. > > They never look at the data warehouse. > > So to answer your question: It depends. > > * On how much time you have > * do you want the ability to create new data marts > without adding to > the ETL system ? ( it should already be getting > everything you need ) > > Since you already have something that looks like a > DW, why not > use that to build data marts that employ star > schemas and bitmap > indexes? They are easier to query, and faster. > > I believe both Kimball and Inmon subscribe to this > philosphy. > > Jared > > > > > > > Gurelei <[EMAIL PROTECTED]> > Sent by: [EMAIL PROTECTED] > 05/10/2002 11:43 AM > Please respond to ORACLE-L > > > To: Multiple recipients of list ORACLE-L > <[EMAIL PROTECTED]> > cc: > Subject: data warehousing desing - to > denormalize or not to denormalize - that is > the question > > > Hi. > > We are designing a small database using a data > warehousing desing. We have created a 3rd normal > form > and are now debating whether and how to denormalize > it. I see the pluses of denormalization - easier > queries creation and tuning. What are the > disadvantages that we should be aware of? Wasted > space > is not an issue because the tables a pretty small. > What else should we consider as a potential issue? > > thank you > > __________________________________________________ > Do You Yahoo!? > Yahoo! Shopping - Mother's Day is May 12th! > http://shopping.yahoo.com > -- > Please see the official ORACLE-L FAQ: > http://www.orafaq.com > -- > Author: Gurelei > INET: [EMAIL PROTECTED] > > Fat City Network Services -- (858) 538-5051 FAX: > (858) 538-5051 > San Diego, California -- Public Internet > access / Mailing Lists > -------------------------------------------------------------------- > 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). > > > > -- > Please see the official ORACLE-L FAQ: > http://www.orafaq.com > -- > Author: > INET: [EMAIL PROTECTED] > > Fat City Network Services -- (858) 538-5051 FAX: > (858) 538-5051 > San Diego, California -- Public Internet > access / Mailing Lists > -------------------------------------------------------------------- > 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). __________________________________________________ Do You Yahoo!? Yahoo! Shopping - Mother's Day is May 12th! http://shopping.yahoo.com -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Gurelei INET: [EMAIL PROTECTED] Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- 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).
