Oh... Thank U Mark.
got it now. ...now i can explain it to someone who doesn't know. Cheers. Mark Richard <[EMAIL PROTECTED]>: > It's not this simple... > Let's take your low cardinality example... Gender is a good example since > there are only two (common) genders - male and female. > A table with 10,000 staff would make the gender column low cardinaility - > only 2 distinct values. If you had 5,000 males and 5,000 females then the > data would be evenly distributed and therefore not skewed. If, however, > you had 9,500 females and 500 males then you have skewed data. > Hopefully this gives some idea of the difference between cardinality and > skewed data. -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: orababy 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).
