Oracle-L: Re: Using dimensions

From: Tanel Poder <tanel.poder.003_at_mail.ee>
Date: Tue, 30 Sep 2003 00:49:45 -0800
Message-ID: <F001.005D167B.20030930004945@fatcity.com>

Using dimensionsQuery rewriting to use materialized views requires dimensions to be defined.

Tanel.

Original Message ----- From: Jamadagni, Rajendra To: Multiple recipients of list ORACLE-L Sent: Monday, September 29, 2003 7:14 PM Subject: RE: Using dimensions

Thanks Scott, okay lets forget OLTP .. but I haven't seen any _actual_ uses of dimensions ... where does one use them? in SQLs?

I have scanned TFM, but haven't STFW'd yet ... scared of too many hits.

Thanks
Raj

Rajendra dot Jamadagni at nospamespn dot com All Views expressed in this email are strictly personal. QOTD: Any clod can have facts, having an opinion is an art ! -----Original Message-----
From: Scott Canaan [mailto:srcdco_at_rit.edu] Sent: Monday, September 29, 2003 11:55 AM To: Multiple recipients of list ORACLE-L Subject: RE: Using dimensions

Dimensions are data warehouse constructs. They are implemented as tables in the database, but have the characteristic of a hierarchy that can be traversed. For example: a time dimension can have the hierarchy of date, day, week, month, quarter, year, decade, century. This is used for rollup reporting within the data mart. I don't see any good use of it in an OLTP environment, but I may be wrong.

Scott Canaan (srcdco_at_rit.edu)

(585) 475-7886

"Life is like a sewer, what you get out of it depends on what you put into it." - Tom Lehrer.

-----Original Message-----
From: Jamadagni, Rajendra [mailto:Rajendra.Jamadagni_at_espn.com] Sent: Monday, September 29, 2003 10:55 AM To: Multiple recipients of list ORACLE-L Subject: Using dimensions

I have tried, but haven't found a good example of how to _use_ a dimension in 9ir2. I defined one, but then sat clueless on what to do with it. Is it any good in an OLTP environment? (I smell the answer is a NO, but still) ...

Any notes from your experience?

TIA
Raj

Rajendra dot Jamadagni at nospamespn dot com All Views expressed in this email are strictly personal. QOTD: Any clod can have facts, having an opinion is an art !

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Author: Tanel Poder
INET: tanel.poder.003_at_mail.ee

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