> How do i change the default value of a column?

Firebird doesn't provide a way to do this.

I suggest downloading Database Workbench here: www.upscene.com
and modifying the "default value". It uses a trick that updates the system
tables in order to create the new default.

Martijn Tonies
Database Workbench - development tool for Firebird and more!
Upscene Productions
http://www.upscene.com
My thoughts:
http://blog.upscene.com/martijn/
Database development questions? Check the forum!
http://www.databasedevelopmentforum.com