Specifically, does SQL Server run on MAC OS
-No, the only supported system is Windows, unless you use Virtual PC for MAC.
and can I use the access ADP file also on a MAC client.
I don´t know of any runtime for ADP / Access projects, you can access SQL Server with the Mac using the appropiate drivers but I don´t know of any runtime which is supporting ADP under Mac.
Sorry for my last short explanation.
HTH, Jens K. Suessmeyer.
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