Data Upload Module

A module to upload CSV files into a MySQL Database is needed.
The CSV needs to be parsed in a JavaScript FrontEnd for it to be uploaded to our MySQL Database through a PHP BackEnd.
Two different types of CSV files may exist; one with information about sales, and another one for stocks.

The following fields from the CSV file need to be uploaded:
Ya se ponen las variables que corresponden

And the following DataBase structure is needed:
Estructura de la BD

Certain checks need to be assessed in order to ensure that the parsed data hasn't already been uploaded to the database and, as such, avoid duplicates. These trigger once a user has selected a CSV file with the same information as one previously uploaded.

Our servers and databases are all set up on AWS Cloud.