A family of Microsoft relational database management systems designed for ease of use.
A QR code is simply another way of representing a text string; many commercial QR code readers can be used to read the code from a scanned image. The input is just "seen" by the program as if someone were typing very fast and accurately. The scanner hardware will come with software to connect to your computer input. Similarly, most scanner vendors provide fonts which print a text string into a QR image; such fonts are also available online. Generally no special programming is needed - the scanner reads a text string, and any graphic printer can print a text string into a code.