Modifacations Centralised Telephone Dtabase

We need additional works to a system previously created. - I need the CSV file to be uploaded into categories called supplier. So When I upload the CSV file it will ask which categories will it be assigned to. Supplier A, Supplier B ect. - We need to be able to add and remove suppliers - We don’t need all the data from the CSV file any more. We just need First Name, Surname, Phone Numbers and Postcode. - When a CSV file is uploaded, the user will select a supplier. The data in the CSV needs to checked against that supplier only first. - after it has been checked against that single supplier, it will produce a report in CSV of duplicate numbers found for that supplier only. - It will check also for invalid numbers and produce a CSV - It will then check all the remaining entry’s (after the above 2 steps) against the WHOLE database for duplicates and produce a CSV. - It will then create a new CSV based on the original file that was uploaded with ALL DUPLICATES and invalid numbers removed. - A new upload method so we can see progress of file upload and when the file has been processed we will get an email.