A family of Microsoft relational database management systems designed for ease of use.
Barcodes are just a form of input. They will go into a field in a table once they are scanned. Handheld scanners can plug into your computer to provide that input. The rest is standard stuff.
In addition to having the bar code font, have you obtained a barcode scanner? You CAN definitely enter bar codes manually using the key board, of course, but that loses the point of having them available via the scanner.