HELP in Generating XML(PLz help its urgent)

Question

Hi,I need to generate XML FIle.Since i m new to XML.
I had toregister the valid schema in my DB now i want to generate the XML file and with the refernce to this schema that xml file should be validated one against that schema.
things i hav done till now
->i hav registered the scehma
and the sample XML file provided by client
<?xml version="1.0"?>
<MEDMLDATA xmlns="PhaseForward-MedML-Inform4">
<!-- Insert Trial/Study Information -->
<STUDYVERSION UUID="id"
STUDYNAME="name"
VERSIONDESCRIPTION="text" />
<!-- Insert Site Personnel Information -->
<USER USERNAME="mmeyer"
USERTYPE = "SITE"
ACTIVESTATE = "TRUE"
DELETESTATE = "FALSE"
FIRSTNAME = "Marianne"
LASTNAME = "Meyer"
DISPLAYNAME = "Marianne Meyer"
TITLE = ""
HOMESCREENURL = "./Custom/HomeDefault.html"
PHONE = "[phone]"
FAX = "[phone]"
ALTPHONE = ""
EMAIL = "[email protected]"
ADDRESS = ""
ADDRESS2 = ""
CITY = ""
STATE = ""
ZIPCODE = ""
COUNTRY = ""
BEEPER = ""
USERMUSTRESETPASSWORD = "FALSE"
DESCRIPTION = ""
PASSWORD="changeme"/>
<USER USERNAME="john"
USERTYPE = "SITE"
ACTIVESTATE = "TRUE"
DELETESTATE = "FALSE"
FIRSTNAME = "John"
LASTNAME = "Meyer"
DISPLAYNAME = "John Meyer"
TITLE = ""
HOMESCREENURL = "./Custom/HomeDefault.html"
PHONE = "[phone]"
FAX = "[phone]"
ALTPHONE = ""
EMAIL = "[email protected]"
ADDRESS = ""
ADDRESS2 = ""
CITY = ""
STATE = ""
ZIPCODE = ""
COUNTRY = ""
BEEPER = ""
USERMUSTRESETPASSWORD = "FALSE"
DESCRIPTION = ""
PASSWORD="changeme"/>
<!-- Insert Site Information -->
<SITE NAME=     "(01) Massachusetts General Hospital" MNEMONIC="01"
ADDRESS = "1 Main Street"
ADDRESS2 = ""
CITY = "Boston"
STATE = "MA"
ZIPCODE = ""
COUNTRY = "USA"
PHONE = "[phone]"
ALTPHONE = ""
FAX = ""
EMAIL = ""
TIMEZONE="(GMT-05:00) Eastern Time (US & Canada)"
SITEDATEFORMAT = "MONTH_DAY_YEAR"
STARTDATE = "April 1, 2005">
</SITE>
<SITE NAME=     "(02) Boston General Hospital" MNEMONIC="01"
ADDRESS = "1 Main Street"
ADDRESS2 = ""
CITY = "Boston"
STATE = "MA"
ZIPCODE = ""
COUNTRY = "USA"
PHONE = "[phone]"
ALTPHONE = ""
FAX = ""
EMAIL = ""
TIMEZONE="(GMT-05:00) Eastern Time (US & Canada)"
SITEDATEFORMAT = "MONTH_DAY_YEAR"
STARTDATE = "April 1, 2005">
</SITE>
<!-- Insert SITE and User Mapping Information -->
<SITEGROUP SITENAME="(01) Massachusetts General Hospital">
<USERREF USERNAME="mmeyer"/>
</SITEGROUP>
<SITEGROUP SITENAME="(02) Boston General Hospital">
<USERREF USERNAME="John"/>
</SITEGROUP>
<!-- Insert User ROle Information -->
<RIGHTSGROUP GROUPNAME="CRA">
<!-- Insert Rights -->
<RIGHTREF RIGHT="Print"/>
<RIGHTREF RIGHT="Monitor"/>
<RIGHTREF RIGHT="Canned Reports"/>
<RIGHTREF RIGHT="View CRF"/>
<RIGHTREF RIGHT="View Signature History for CRF"/>
<RIGHTREF RIGHT="View Signature History for CRB"/>
<RIGHTREF RIGHT="Data Export Listings"/>
<RIGHTREF RIGHT="Freeze a CRF"/>
<RIGHTREF RIGHT="Unfreeze a CRF"/>
<RIGHTREF RIGHT="Mark and Unmark a CRF as SVed"/>
<RIGHTREF RIGHT="Freeze a CRB"/>
<RIGHTREF RIGHT="Unfreeze a CRB"/>
<RIGHTREF RIGHT="Change Query State from Candidate to Open"/>
<RIGHTREF RIGHT="Change Query State from Candidate to Deleted"/>
<RIGHTREF RIGHT="Change Query State from Answered to Closed"/>
<RIGHTREF RIGHT="Change Query State from Open to Closed"/>
<RIGHTREF RIGHT="Change Query State from Reissued Candidate to Closed"/>
<RIGHTREF RIGHT="Enter Query in Candidate State"/>
<RIGHTREF RIGHT="Enter Query in Open State"/>
<RIGHTREF RIGHT="Re-issue Query in Candidate State"/>
<RIGHTREF RIGHT="Re-issue Query in Open State"/>
<RIGHTREF RIGHT="Navigate by Visit"/>
<RIGHTREF RIGHT="Navigate by Form"/>
<RIGHTREF RIGHT="Reordering of Patients"/>
<!-- Insert Users for role -->
<USERREF USERNAME="mmeyer"/>
<USERREF USERNAME="john"/>
</RIGHTSGROUP>
</MEDMLDATA>
now i need to generate XML based on the above SAMple XML file,can anybody tell me how to generate XML file based on this..and after generating it should be validated against the registerd schema.

Answer 1

Maybe I am wrong, but my understanding is that you have to generate the xml from your data source (usually tables) and then you validate it against your schema. I don't know if the schema has a magic that can generate the xml for you. Is that correct? Anyone please? At the beginning, I asked a .Net guy if his tool could "generate" an xml simply using the schema (I thought so). But he said they had to use many style sheets to create the xml.
Ben