I realize, when talking about structures, obviously if you say *"post hasMany comments"* there are many records about *comments* relating to each *post*.

Don't understand what context these sort of terms are used in. I'm thinking mainly only in DBAL or talking about design. In any case, when one thing hasMany of another how/where does it show up in application and database logic?

Sorry for the totally newb question, I've tried searching but I keeping finding discussions about such and such hasMany x. If anyone can help refine the question (especially tags), please feel free.