Used tools Delphi 7, DBD DB type Paradox. There is a database with the fields ID, name, registration date, end date. For example, 1 Fox 02.10.2011 10.03.2012, that is, the product expires in a year. The bottom line is that after a year there was a countdown in time from moment to end, pop-up messages such as the expiration date expired. I honestly have no idea how this is done, I know that the timer component is used.
Thank you in advance.