Data modelling layers: do you wanna get logical or physical

An introduction to data models

Interview In the bad old days we used to progress from "current physical" to "current logical" models. We then used to transform the "current logical" to the "new logical" – and about then the deadline cut in and we scurried about hacking the code for the new system which is about as "new physical" as you can get. No wonder the agile people noticed that it made more sense to devote your time and intelligence to the "new physical", which wasn't going to be thrown away soon after you finished.…