Database naming

From Sysadmin

It is recommended that database names be unique across an entire organisation, not just on each database server. Thus is a database were to be loaded on to the wrong server it would not damage an existing database.

An example of this would be an organisation that had multiple Mediawiki databases running on different servers. If each one uses the default name of wikidb then it is easy to get the databases mixed up during a migration or at other times.