Still Confused About Identifying vs. Non-Identifying Relationships

Question

So, I\'ve been reading up on identifying vs. non-identifying relationships in my database design, and a number of the answers on SO seem contradicting to me. Here are the t

Answer 1

I believe only difference between an identifying and non identifying relationship is about Nullability of the foreign key. If a FK cannot be NULL, the relationship it represents is identifying (child cannot exist without parent) else it is non identifying.