if you don't find a direct extension object, I can tall you a way. Write a server side code (for example JSP) that takes data as get parameter and updates into DB. Once DB is updated code should kill new browser window. In QlikView on action of button, add open url to this server side page and in the url concatenate your values to be inserted as get parameter(which will be parsed in your code). I am not very good with creating extension objects but even there you will have to add ajax and server side code will be referred in that ajax call too.