Re: In Sap hana -09 Does Hana XS have a built-in XML parser? If not, what's approach to process xml in XS?

Yes this is possible.  You can of course upload a file from the client side to XSJS and process it however you like on the server side. You can store it in the database as a CLOB/BLOB or parse it using the APIs I linked to earlier. After parsing the XML you can create tables/columns using SQL from XSJS of course. The size constraints would probably 300-400Mb files or less. That's quite large for XML actually. Anything larger and you would need special configuration on the XSEngine otherwise you will exceed the maximum memory size of the JavaScript VM.