1)   Apex SQL Doc 2005.11
Apex SQL Doc is a powerful tool to document your sql server database into HTML and CHM help Documentation including VS2005 style and HTML 2.0 support.

 2)   DBScribe for MySQL 1.1
Leadum DBScribe is a free powerful tool to document MySQL database into HTML, CHM help, MS Word Documentation. It supports: rich set of output formats and styles, wizard and command line interfaces, complete database structure documenting