Run SQL commands. Note that Oracle is case$-$insensitive. Also note that all SQL statements need to end with a semicolon $(.$

$($a$)$ create table STUDENT $($

sid number $(7),$

sname varchar$2(30),$

sdno number $(5))$;

$1$

I

A table named STUDENT is created in the database. Guess what is the meaning of "number$(7)"$ in the statement.

Answer: