Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!iuvax!ux1.cso.uiuc.edu!ux1.cso.uiuc.edu!m.cs.uiuc.edu!ksmith From: ksmith@m.cs.uiuc.edu Newsgroups: comp.databases Subject: query/update ratio? Message-ID: <3900029@m.cs.uiuc.edu> Date: 13 Nov 89 16:36:00 GMT Lines: 17 Nf-ID: #N:m.cs.uiuc.edu:3900029:000:596 Nf-From: m.cs.uiuc.edu!ksmith Nov 13 10:36:00 1989 I have heard it said that (read-only) queries comprise 80-90% of the transaction mix in a "standard" (accounting, banking, personnel) database environment, the rest being various database-modifying updates (insert, modify, delete). Can anyone point me to a study which says this? Or would someone who has studied this mix in such environments be willing to write me and let me know what sort of ratio you have observed? (I'm doing research on database environments which are not query dominated.) Thankyou, -Ken Smith ksmith@m.cs.uiuc.edu University of Illinois Urbana-Champaign