There is none, that I'm aware of -- and I've worked with IT for a couple of grocery markets. Building such a database system will be trivial. They don't need a

There is none, that I'm aware of -- and I've worked with IT for a couple of grocery markets. Building such a database system will be trivial. They don't need anything fancy. HOWEVER: your big stumbling blocks will be integration with NCR and other very, very proprietary hardware; and adoption. Once a store has a system in place, they're very reluctant to mess with it, because the systems are fragile and downtime can cost a lot of money in a hurry. If you get curious about how to hack older NCR market systems, let me know. Email's in my profile.