PSM has a number of restrictions on the form of formal$-$parameter declarations. You should be sure you remember these rules, and then answer the following. In a PSM $($SQL standard$)$ procedure definition of the form:

CREATE PROCEDURE foo$($xxx$)...$

A string that legally could appear in place of xxx is:

Question $4$ options:

bar INOUT CHAR$(30)$

bar IN CHAR$(30)$

bar OUT CHAR$(30)$

INOUT bar CHAR$(30)$