Table Oracle PLSQL

SQL>
SQL> create table employee_history
  2      ( employee_id      number(6) not null,
  3        salary           number(8,2),
  4        hire_date        date default sysdate,
  5        termination_date date,
  6        termination_desc varchar2(4000),
  7        constraint emphistory_pk
  8          primary key (employee_id, hire_date)
  9      )
 10     /
Table created.
SQL> describe employee_history
 Name                                                                                                      Null?    Type
 ----------------------------------------------------------------------------------------------------------------- -------- ----------------------------------------------------------------------------
 EMPLOYEE_ID                                                                                               NOT NULL NUMBER(6)
 SALARY                                                                                                             NUMBER(8,2)
 HIRE_DATE                                                                                                 NOT NULL DATE
 TERMINATION_DATE                                                                                                   DATE
 TERMINATION_DESC                                                                                                   VARCHAR2(4000)
SQL>
SQL>
SQL> drop table employee_history;
Table dropped.
SQL>