What about items that have identical stats but different IDs do you think they would trigger an alert? Lol do you want a list of games in which there have been item duping flaws (Borderand 2 LOL)?
Duping happened at some point however as you so vehemently pointed in your previous post without the details it's just speculation. But it did happen on the Asian server at least that's for sure.
ID stands for the unique data in each cell not an item in a game per se. It is overall common DB language.
the Asian duplicate was due to a programming error but Blizzard's DB immediately reported a checksum error and so the server was rolled back to the previous snapshot before the error. Common practice.
Each cell is constantly monitored and checked upon its consistency. When a table no longer is consistent it sets out an alert.
The only thing you could say is that Blizzard would ignore such alerts, but even then the game as such would be !@#$ed up in a matter of minutes.
All interaction between the tables could even result in giving thousands of errors in a few seconds time..
Alarms would go off anywhere in those tables.
No one could ignore it. It could lead to the crashing of the game.
As for games which have LOCAL stored items, of course tempering with such local items is easy but this can't be the case with server based games with items stored on these advanced DB tables.
Are server games full proof ? No of course not: everything that is STILL client based can be tempred with.
Speed hacks, Bots, floating characters etc... those are still client side data. But items (and their value) as such are only stored on the server side and so tempering with this kind of data would directly result in alarms in the consistency tables of their DB's.
Even if it would happen (by accident ONCE at the end of MAY) it would never be consistent and traced back to where it happened.