define external counter function SQLConnect
     (  read-only SQL_handle_type ConnectionHandle,
        value stream ServerName,
        value counter NameLength1,
        value stream UserName,
        value counter NameLength2,
        value stream Authentication,
        value counter NameLength3 )

Establishes a connection to a driver and data source.

Input arguments:

• ConnectionHandle.
• ServerName. The name of the data source.
• NameLength1. The length of ServerName.
• UserName. The user identifier.
• NameLength2. The length of UserName.
• Authentication. The authentication string (typically the password).
• NameLength3. The length of Authentication.