Is it alright if I don't delete unused tables for a database?

Question

Does it affect the performance of the database?

Answer 1

It can cause it to slow a little but no difference would be noticed, I would remove them thou, as they are not needed.

Answer 2

no they are empty.

Answer 3

They will take a minimal amount of storage space obviously, but no they will not affect performance at all.

Answer 4

If they once held significant amounts of data subsequently deleted, it might have some short-term impact because they'd tie up room in your tablespace until you compress them to free it up again. Other that that, it shouldn't have any noticable effect.