Another example of a 'unary' relationship?

Another example of a ternary relationship?

Why is full functional dependence a good thing?

Diff between entity and referential integrity, in terms of...

Examples of 'blind' (non-identifying) keys in RL?

How can we use tables to model unary relationships?

Closure - where else?

Why is closure a good property?

Set diff is non-commutative - what else is?

What is the conceptual shift, from a 'spreadsheet DB' to a relational one?