A: 

Should be Dbase, you can probably also open those with FoxPro, from within FoxPro you can upsize to SQL Server

SQLMenace
Foxpro can open DBase file
SQLMenace
A: 

First search result returns it's an Informix database. Couldn't confirm it for you though.

JRL
A: 

From memory it sounds like Informix

or a tonque in cheek remark

Outlook Express :)

Rippo
A: 

If I remember correcttly they are Paradox files. If they are, you should be able to access them via ODBC.

Garett
Paradox data files use .db as the file extension and don't have the strings "Record Schema" or "Key Schema" embedded in them.
MikeJ-UK