I have been talking to different programmers about the primary field of my tables. I am being pointed in a 1000 different directions, if thats possible. Anyway I use a lot of spreadsheets at work and I want to develop an application to store my data in a database and be able to manipulate and generate reports from that data. Should I use an integer identity seed or a GUID? I'm trying to get this right the first time, is that possible?