Patrick,

Not sure if it helps, but I found the following at http://www.experts-exchange.com/Databases/Q_10026643.html on a Google search:

I believe this will be next to impossible without actually getting your hands on a Watcom SQL Server for long enough
to extract the data.  However...

Watcom SQL Server was bought by Sybase and renamed SQL Server
Anywhere.  You can download a free 60-day evaluation copy of 
SQL Server Anywhere Professional (the latest version) from
http://www.powersoft.com/download/sqlanyform.html.

>Hi All,
>
>My clients send me a database file with a .db extension which i need help to extract the data out of it. I have try open it with all source of application like Foxpro,excel,notepad... but failed ,come out like alien words.
>But i see some words like 'Watcom Internation Corp., copyright (c) 1984,1997',create procedure dbo.sp_changedbowner(in @login_name char(128),in @true_kw char(4) default null)
>begin
> call sp_tsql_feature_not_supported()
>
>Does anyone know what kind of database is it ?
>
>
>Thanks.