Is there a way to secure a database entry once the entry
has been made, to prevent overwritting the original entry
with a subsequent entry.  Unfortunately my office has a
person doing data entry that isn't real computer savy.  
He's constantly overwritting previous entrys in our
database with new entrys.  I would like some way of
securing the database so that new entries can be made,
without the possiblity of overwritting the previous
entries.

Thanks