firebird : Relational database offering many ANSI SQL:2003 and some SQL:2008 features ( http://www.firebirdsql.org/ )
mssql-cli : Command-line client for SQL Server with auto-completion and syntax highlighting ( https://github.com/dbcli/mssql-cli )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a linuxunderground-overlay
For Paludis use this rsync : rsync://gentoo.zugaina.org/linuxunderground-overlay-portage
If you have a problem : ycarus(-at-)zugaina.org