[ms_access] Data Change Tracking

[marcjchapelhill]

My database has multiple records and fields.  I'm constantly changing 
data.  I'm looking for a way to track when I make data changes.  
Logically, I'm thinking of an Append query tied to the "On Change" 
command that appends the changed data along with the uniques record 
identifier to a seperate table.  How can I accomplish this without 
appending all data residing in the main data table?