I'm pretty sure that Walmart's databases track way more interesting things than tweets. I'd assume that they know where every pallet of product is located anyw

I'm pretty sure that Walmart's databases track way more interesting things than tweets. I'd assume that they know where every pallet of product is located anywhere in the world and what's in it, where every truck is and what's in it, the referrer for every click on their web site, details on every purchase at every store, location of every incoming product from every supplier..... And then I'd assume that they take all that data and de-normalize it, move it to a whole different series of databases, poke it into star schemas and warehouse it for further analysis - 'cause y'know - red wieners might be more popular than blue wieners next xmas, and they'd better anticipate that by at least 6 months, 'cause the wiener factories have to re-tool. Real business have real data, not tweets.