Using a Logging Engine to Get the Right Data

An index doesn't only have to be the key, right? So you could tually have another index that's derived off that data. If you're talking about an on line transactional data base like sequel server oracle post gress, those type of things, the more indexes you have, the slower your write is. And so now it's almost like we're describingfor if yeu really want to talk about a phone book. Ju, and at that point there its a composite key, which is what you're describing when you use more than one field. It also has to write all those indexes before it marks this thing as done.