Hi Don
I'm fairly certain that Books does not have the ability to connect to SQL, you would need the full Standard ERP package and subscribe to the SQL licence. There is not an ODBC driver which links into HansaWorld's products, however in the latest versions of Standard ERP there is a REST API which allows web queries from external systems (e.g. Excel) to pull in data.
Regards
Paul Timms
IT System Integrators Ltd