I am not familiar what that database system?
However, ms-access can connect to the industry standard databases.
Those databases can be Sql-server, Oracle, Sybase and even My-Sql.
So, via ODBC, the answer is yes. I have never heard of a database vendor
called "American Contractor". However, if that database system like Oracle,
and sql-server and most modern database systems has ODBC, then yes, you can
use ms-access to query data from that database system.
Of course, perhaps by American Contractor you are talking about an
application, and not a database system. You might want to ask if that
application uses one of the industry standard databases.
Perhaps the application was written in ms-access and you don't even know!