Re: Help Please, Looking for a data row hash check digit Algorithm

At user conference, I will be giving a tutorial on replication which will include techniques on maintaining a checksum column in much the same as a hidden shadow column. "Tim" <tim_rogers01@hotmail.com> wrote in message news:241633fb.0408020435.1f246348@posting.google.com... > Greetings All, > > Many moons ago I worked on an Informix data warehouse system where > each row had an integer hash total check digit. I cannot recall if > this digit was calculated prior to the row being loaded/inserted or at > the time of loading/insertion. The rows' hash total was used to > circumvent unnecessary updates of unchanged rows during 'intelligent > loading'. > > I'm hoping someone can offer guidance or an example of the type of > code that would calculate such a 'hash total'. It was capable of > indicating a simple change like the up-shifting of a letter. Does this > ring a bell with anyone? Has Informix long since provided such a > utility ? > > TIA, Tim