The function header for a return-value function starts with which of the following? void function

Imagine that a piece of a primary key is also a potential secondary key. Can you tell me what your reaction would be?

Imagine that a piece of a primary key is also a potential secondary key. Can you tell me what your reaction would be?

Directions: For each proof, you must include (i.e., write) the premises in that proof. I do not want to see any proofs without premises. YOU CANNOT USE CONDITIONAL PROOF (CP), INDIRECT PROOF (IP), and ASSUMED PREMISES (A). Additionally, use only the 18 rules of inference found in the text and in the notes. You will lose points if you use any of the inference rules Resolution, Contradiction, Transposition, Idempotence and Identity.