Labels:text | screenshot | font | number | receipt | document OCR: GuestBook Column Data Type UserID (primary key] AutoNumber InsertDate DateTime FNeme Text (15) LName Text (20) EMail Text (50) Ace Text (5) Gender Text (1) IncludeMe Yes/No UserNotify Column Data Type UserID (primary key) Long Integer CategoryID (primary key) Long Integer Mailings Column Data Type LastDate (primary key) DateTime Figure 3: The three table structures used to implement the user notification function.