I am working on creating a database that stores competitor information. One of the fields in my competitor products table is Price. The price point for competitor products changes periodically and I would like to store this trend. Do I have to add new fields every time I receive new pricing information (ex. Fields 'Price-2011', 'Price-2012', 'Price-2013') or am I able to update my sole Price field and have it store the data from prior dates? In other words, can I store the price of their product for 2011 and update that for 2012, without losing my data point for 2011?