Обсуждение: Distributed / Linked with Open Source DB
Does anybody out there have experience implementing either a distributed homogenous database or linked databases with MYSQL or POSTGRES. The reason I ask is I will have 4 distant regions connected over high speed data lines, that will have seperate databases, if the databases had the same table structure, ie table names and field types and widths the same, would it easily be possible to link these together so that they can be queried as one database (union), but the one region can only perform DML on their own databases data. Has anybody out there done this? I assume this would require a lot of traffic between the servers. Is this efficient, and reliable? I am looking at Oracle, they offer all of the capabilities, but are pretty complex, and way more expensive than the open source solutions. Lee D. _________________________________________________________________ Send and receive Hotmail on your mobile device: http://mobile.msn.com
On 4 Oct 2002 at 14:49, Ex Fed wrote: > Does anybody out there have experience implementing either a distributed > homogenous database or linked databases with MYSQL or POSTGRES. > > The reason I ask is I will have 4 distant regions connected over high speed > data lines, that will have seperate databases, if the databases had the same > table structure, ie table names and field types and widths the same, would > it easily be possible to link these together so that they can be queried as > one database (union), but the one region can only perform DML on their own > databases data. Has anybody out there done this? > > I assume this would require a lot of traffic between the servers. > Is this efficient, and reliable? If you implement some kind of replication(Plenty of it available for postgres) which periodically syncs all the databases, you can query individual nodes and get pretty accurate picture. I hope you don't need real time replication here. It's available for postgresql but would be too much bandwidth intensive.. Bye Shridhar -- My father taught me three things: (1) Never mix whiskey with anything but water. (2) Never try to draw to an inside straight. (3) Never discuss business with anyone who refuses to give his name.