On Tue, May 09, 2006 at 10:10:50AM +0200, Houssais Hugues wrote: > Each distant database works on its own domain of data. Then no conflict should happen during updates. > One thing I have not specified is that the distant databases don't handle global data but only data collected at the local level. > Slony-1 seems not to provide replication from multi-partial databases to one global database. But maybe I'm wrong... Can you tell me more about this use of Slony? Slony-I is in fact single-master. Slony-II will be multi-master, but it's also vaporware right now. What you can do is setup different tables for each set of local data and replicate all of those back to a central location. That location can then merge everything together and push it back out. You can also just have each location be a master for it's local data and have all the other locations subscribe to it. -- Jim C. Nasby, Sr. Engineering Consultant jnasby@xxxxxxxxxxxxx Pervasive Software http://pervasive.com work: 512-231-6117 vcard: http://jim.nasby.net/pervasive.vcf cell: 512-569-9461