Relational database design question - Surrogate-key or Natural-key?

Question

Which one is the best practice and Why?

a) Type Table, Surrogate/Artificial Key

Foreign key is from user.type to type.i

Answer 1

If typeName is a natural key, then it's probably the preferable option, because it won't require a join to get the value.

You should only really use a surrogate key (id) when the name is likely to change.