Dear U S Sharma,
Thank You for giving valuable information about PAN database updation, its nothing but correction of PAN, where we use to file Form-49A now it become online, actualy i'm looking for way to update directly in web: because yesturday also @ interactive session with CPC afficial they said we can update our PAN details like: address,email-id & Phone no..., in tin-nsdl site. But, i am not able locate in the site,
One easy way to update data is Income Tax Return, while filing IT return we can enter actual address, email & mobile number ...., because department will communicate with assessee based on data available in ITR. it considered as currect contact details.