Gh-ost If like 99 percent of MySQL DBAs you have faced implementing a change to a MySQL table while fearing the impact on production, then you should consider Gh-ost (GitHub Online Schema Migration).

Tokutek offers an alternative MySQL storage engine for on-the-fly schema changes Database tools provider Tokutek has updated its MySQL storage engine to support live updating of schemas, the ...

It's an XML to relational db mapping tool. I seem to recall someone working on a schema map generator, but I don't know if it is finished or not.

Database tools provider Tokutek has updated its MySQL storage engine to support live updating of schemas, the company announced Wednesday. Taking a database offline to update the schema can be too ...