• taylor_benjamin (3/8/2011)


    Wow! That really goes back. Yes, the first MS version of SQL Server was to take Sybase and port it to run on OS/2.

    I am not sure, but as I recall, version 4.21 was the first version to run under the Windows OS (Window NT Advanced Server was the branding as I recall).

    Version 4.21a was the first version of SQL Server to break away from Sybase as a purely MS code base.

    Actually, 4.20 came from Sybase and ran on OS/2, then was ported to Windows Advanced Server v3.1. I'm not sure is it was 4.21a or 4.21b that moved, but I went through all of them.

    SQL Server 6.0/6.5 still contained some Sybase code as well. SQL Server 7.0 was a rewrite that was completely MS.