title: Reset Identity column in SQL Server
body: <p>I am making an SQL database that stores contacts. I want to be able to delete contacts, and the correct id for each contact is crucial for my software connecting to it. Lets say I have contact James and he is the first one. His id is 0. I add Mary and her id is 1. If I delete James, how can Mary's id be set to 0 instead of staying 1? It has to reset since she is the first one now. In other words, how can I reset all of the IDs in the database when someone gets deleted? Thanks</p>