haven't you asked this already today? Or was that someone else? Anyways, I will be talking to Jack about putting it in the EMC Wiki.
It wasn't really accurate as most people's shop got outdated and ran out of stock. But it was a neat thing to have, the creator could give the code to Jack if he liked
The EMC Shopdatabase was player ran. It wasn't an official EMC thing. As Alex said, it wasn't 100% accurate and nobody really bothered to update their listings. Aikar is putting in a new system for shops. Just have to wait.
Unless there is something that ties into the EMC database and uses black magic to link chests and shop signs together, any database will quickly become outdated and more of a frustration than an aid.