1. A method executed on a computer system, wherein the computer system comprises a processor, memory, and a user interface, for determining decay for an item of data in a database, comprising: retrieving a date/time stamp from the database for an item of data; calculating a time from a last update, wherein the last update is represented by the date/time stamp; retrieving one or more decay rules; calculating a decay score for the item of data according to one or more decay rules; and reporting the decay score to the user interface.