Hello,

All your questions are answerd here in simple way - Oracle SQL ref 8.0 :

http://storacle.princeton.edu:9001/o...4a.htm#1995015

and one about replications in detail :
http://storacle.princeton.edu:9001/o...a58245/toc.htm

,i hope a mod wont mind me posting a link here.

[Edited by Helix on 04-08-2002 at 05:04 AM]