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Does SQL 7 support db-lib? What about 16-bit clients - DOS etc.?

Yes it does, but db-lib is functionally stabilised at the 6.5 level. Therefore if a db-lib client on whatever platform worked against a 6.5 database it should work against the same database migrated to SQL 7.0.

None of the SQL 7.0 features like unicode, character columns greater than 255 characters etc. are in db-lib though. So if you utilise any SQL 7.0 features then these can only be accessed by ODBC 3.7 or OLE-DB clients.

Similarly for 16-bit clients. These are supported, but only with the 6.5 levels of ODBC/db-lib code. 16-bit clients cannot access new SQL 7.0 features either.

The 16-bit client code is not supplied with 7.0 - you will have to get it from the 6.5 cd. This includes DOS drivers. 

Michael R. Hotek

All content on this site, except where noted, represents an original work of Michael R. Hotek and is protected by applicable copyright laws. The SQL Server FAQ is the sole work of Neil Pike. No page, portion of a page, or download may be used for commercial purposes in whole or in part without the express, written permission of the applicable author.