title: Iteration ID in TFS
body: <p>I am trying to understand the underlying Team Foundation Server (TFS) databases, and I came across this sentence : The Iterarion ID in the TFSWarehouse is not the same as the iteration ID in the workItem tracking table. What does this mean. </p>
  
  <p>I was able to retrieve the historic versions of a work item, and I believe the revision ID refers to the number of time the test case has been updated. What is the Iteration ID? in my example- the revision Id is 38 in the final row, and the iteration ID is 10 constantly. </p>