Well, not unlimited, but you should probably set it to a "memo" field if you
will need more than 250 characters for each note entry.
Typically, you would store notes in a separate related table and each record
in that table would have the related record number (customer number,
employee number, etc.) the memo field, a date and time.
Every time a new "note" is added to the database, it is done by creating an
new record in that table.
Many of the templates that ship with Access include this layout. You could
use one of those as your guide. The contact management template has a
"calls" table and form that is a great example of this.
