The Mystery of Field One
I'm a beginner so if the question sounds funny, now you know why....
Most ready made solutions on FMP 9 Adv use a field called One, that is a Calculation field and assigned a value of 1.
Several tables are related by this mystery field One.
Using the Lending Library FileMaker Example here there is a relationship between the contact the assets and the history tables via this One field that allows SOME CALCULATIONS to be performed like finding the number of books checked by this contact.
Is it possible for someone to give me some idea since I wasn't able understand what this field is (Boolean always on or what?), and HOW is it used?
ANY idea will be appreciate.