Constraints Oracle PLSQL

SQL>
SQL>
SQL> create table inventory(
  2  partno number(4) constraint partno_pk primary key deferrable initially immediate,
  3  partdesc varchar2(35) constraint partdesc_uq unique deferrable initially immediate);
Table created.
SQL>
SQL>
SQL> drop table inventory;
Table dropped.
SQL>
SQL>
SQL>