How to access another application to read and write database

How to access another application to read and write database

Hello People

I like to work with Creator.
You can do a lot of nice things with it. However it is not always easy to get answers from the documentation,
therefore I turn to you to ask for answers.

I've several applications that all can make use of a 700+ records database.
It seems natural that I want to have only one copy instead of having a copy for every form I use.
I've imported this data in a form let's call this form 'baseform'
Let's call the application 'baseapplication' .

Now how can I know what the xml page name is to get a good response?
i.e.
mapvar = getUrl("http://creator.zoho.com/zohouser/baseapplication/baseform/????????.xml,false);

stringdata = mapvar.get("responseText");
xmldata = stringdata.toXML();
strdata = xmldata.executeXPath("/What/do I/put/here/?");
xmllist = strdata.toXmlList();

To make the sample application complete can you also show me a detailed piece of code to update a record with
data with postUrl to the same application?

Thanks so much

Hans van Hal