RE: Single Code Table or Separate Code tables dilemma

From: Sam P. Roberts (ZADCO ITIS) <roberts_at_zadco.co.ae>
Date: Fri, 23 Mar 2001 21:43:05 -0800
Message-ID: <F001.002D70AC.20010323211548@fatcity.com>

STAR Queries would perform better with multiple smaller tables (known as Dimension Tables). STAR QUERIES are designed specifically for Decision Support Systems where multiple cartesian products are created on the smaller (dimension) tables and then joined with the LARGE fact table.

Sam

-----Original Message-----

Sent: Thursday, March 22, 2001 4:36 AM
To: Multiple recipients of list ORACLE-L

Guys,

We r working on a Datawarehouse solution.

Our Duhvelopers want to merge all code tables into a single table by adding a codetype column.

with reference to this, i came across this article from Steve's site http://www.ixora.com.au/tips/design/meta-data.htm

i want to put them into different individual code tables instead of a single table, for the foll reasons.

1. specific attributes for a particular code type is logically and physically seperated from other code types.
2. a table lock affects only the concerned code table
3. granular control over the individual code table

i am short of arguments

wld be grateful, if ull can advise me which would be better from performance perspective.

-Mandar
--

Please see the official ORACLE-L FAQ: http://www.orafaq.com
--

Author: Mandar Ghosalkar
  INET: MandarG_at_gsr-inc.com

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: ListGuru_at_fatcity.com (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: Sam P. Roberts (ZADCO ITIS)
  INET: roberts_at_zadco.co.ae

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: ListGuru_at_fatcity.com (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). Received on Fri Mar 23 2001 - 23:43:05 CST