Here's a realtively simple way to implement data versioning in a database, in a way that should be scalable as well. It only needs a couple of support tables and a single function and can apply versioning across multiple data sets concurrently.
Slony-I is a "master to multiple slaves" replication system with cascading and failover. The big picture for the development of Slony-I is a master-slave system that includes all features and capabilities needed to replicate large databases to a reasonabl
dbmodel is a tool to generate Rails files (models, scaffolds) from a free graphic database design tool, DBDesigner 4. You can create tables in DBDesigner, specify table relations, synchronize the model with a MySQL database, and then use dbmodel to automa