Update database outside SAP

Hi guys, I have the following scenario:

Today, I have an abap program that calls a RFC to update a database outside SAP using Business Connector.

The problem is that I won't be allowed to use Business Conncetor (and can't use XI too) to access the outside database (SQL Server 05).

Is possible to update the SQL Server 05 from an Abap program without a Java based connector? Because my main problem is that I can't use Java...

Thank you in advance

Robert