What is meant by 'CONTACTfile is relational'?

A relational database has data stored in many different tables, which are linked together by an invisible ID. This allows you to be much more efficient with your typing, because the data is fed-through to wherever it is needed. In a well-structured relational database you should NEVER have to type anything more than once.

In a typical emailing address book, for example, one line per contact means that addresses have to be typed many times over:

With CONTACTfile, however, you type the address once, and list as many employees as you like underneath:

See how, on the contact screen below, there is room to add more employees, as many as you like, whenever you need to.