20. The computer program product of claim 15 wherein the computer-readable program code is configured to identify a relationship between any of the data labels.
20. The computer program product of claim 15 wherein the computer-readable program code is configured to identify a relationship between any of the data labels. 21. The computer program product of claim 20 wherein the computer-readable program code is configured to store in the computer-readable data store a) an indicator indicating that any of the data labels has a relationship with any other of the data labels, and b) a description of the relationship.