Sequel is an object-oriented wrapper for ODBC implementation for Win32 platforms. It means that the ODBC API is wrapped into classes, which represent all data structures and routines needed to work with databases with taken of SQL. It is also shipped with an example program 'ODBC Test' that can be used to perform any SQL statement on any ODBC compliant DBMS.
A site dedicated to the programming where the SQL related resources can be found.