ORACLE之表

create table t_fn_person(map_id NUMBER(10) primary key not null,
person_code VARCHAR2(20) not null,
person_name VARCHAR2(20) not null,
sex VARCHAR2(10),
insert_time date,
update_time date,
position VARCHAR2(20),
Salary NUMBER(12, 2),
Dept number);
create table t_fn_dept(DEPT_ID NUMBER PRIMARY KEY NOT NULL,
DEPT_NO VARCHAR2(15) NOT NULL,
DLOCATION VARCHAR2(15));

alter table t_fn_person add constraint fk_fn_dept foreign key(dept) references t_fn_dept(dept_id);--建立外键