Data comparison

I am looking for a program to be written for a barcode scanner. I want a program that when i scan a item it records the scan then will check the database and let me update the info, and if its a new item then it will let me enter info about the product such as price description and location of the product. i will also take a picture of the product with the scanner. I am also looking for a program to be written to work with the data that i have collected with he scanner. to import the data i have collected with the scanner and put it in order in a spreadsheet. I also want the data that is collected from the bar code scanner to be imported to a search able database web site. There will be multiple stores I need all the stores database sheets to be kept separate for easy updating. I would also like databases be able to import database from excel, filemaker, etc.... to the site. I need to be able to add and delete stores, add and delete items easily.