Hopefully DBMail is following the normal convention for versioning: major.minor.bugfix. Any bigfix release should only require dropping in the new executables at runtime and maybe a restart. (Or for libraries a bugfix release would mean recompile only, no interface changes.) A minor release may require a formal upgrade or migration procedure, and a major release implies heavy design changes.

Assuming DBMail follows this convention, the only kind of allowable database change in a bugfix release would be something performance-related that would never require a SQL statement to change in an application. If installing a bugfix release does cause application problems, it's a bug in the new release.

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Will Berry
Co-founder, Second Brain website hosting
http://www.secondbrainhosting.com/

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