这是我插入数据时遇到的错误：
INSERT INTO "44581114"."TEACHING_INFORMATION" (STAFFID, COURSEID, SEMESTER, YEAR)
VALUES ('11223344', 'ISYS224', 'S3', '2014')
错误：
ORA-02291: integrity constraint (44581114.FK_TEACHING_RELATIONS_COURSE) violated - parent key not found
ORA-06512: at line 1
保存对表的更改时出现一个错误44581114"."TEACHING_INFORMATION：第 1 行：
ORA-02291: integrity constraint (44581114.FK_TEACHING_RELATIONS_COURSE) violated - parent key not found
ORA-06512: at line 1
如果有帮助，我已在此处附加 DDL 脚本：
/*==============================================================*/
/* DBMS name: ORACLE Version 11g */
/* Created on: 11/10/2016 3:47:29 PM */
/*==============================================================*/
alter table ACADEMIC_REC
drop constraint FK_ACADEMIC_RELATIONS_STUDENT;
alter table ACADEMIC_REC
drop constraint FK_ACADEMIC_RELATIONS_COURSE;
alter table COURSE
drop constraint FK_COURSE_OFFERS_DEPARTME;
alter table ENROLS
drop constraint FK_ENROLS_ENROLS_STUDENT;
alter table ENROLS
drop constraint FK_ENROLS_ENROLS2_TUT_PRAC;
alter table HAS_PREREQUISITE
drop constraint FK_HAS_PRER_HAS_PRERE_COURSE;
alter table HAS_PREREQUISITE
drop constraint FK_HAS_PRER_HAS_PRERE_COURSE;
alter table STAFF
drop constraint FK_STAFF_RELATIONS_DEPARTME;
alter table TEACHING_INFORMATION
drop constraint FK_TEACHING_RELATIONS_STAFF;
alter table TEACHING_INFORMATION
drop constraint FK_TEACHING_RELATIONS_COURSE;
alter table TUT_PRAC
drop constraint FK_TUT_PRAC_HAS_COURSE;
alter table TUT_PRAC
drop constraint FK_TUT_PRAC_RELATIONS_STAFF;
drop table ACADEMIC_REC cascade constraints;
drop table COURSE cascade constraints;
drop table ENROLS cascade constraints;
drop table HAS_PREREQUISITE cascade constraints;
drop table STAFF cascade constraints;
drop table STUDENT cascade constraints;
drop table TEACHING_INFORMATION cascade constraints;
drop table TUT_PRAC cascade constraints;
/*==============================================================*/
/* Table: ACADEMIC_REC */
/*==============================================================*/
create table ACADEMIC_REC
(
STUID CHAR(8) not null,
COURSEID CHAR(8) not null,
STATUS VARCHAR2(5),
YEAR NUMBER(4),
SEMESTER CHAR(2),
GRADE VARCHAR2(2)
constraint CKC_GRADE_ACADEMIC check (GRADE is null or (GRADE in ('HD','D','CR','P','F'))),
constraint PK_ACADEMIC_REC primary key (STUID, COURSEID)
);
/*==============================================================*/
/* Table: COURSE */
/*==============================================================*/
create table COURSE
(
COURSEID CHAR(8) not null,
DEPTID CHAR(8) not null,
COURSENAME VARCHAR2(20),
TEXTBOOK VARCHAR2(20),
CREDITHOUR NUMBER(2),
MAX_ENROL NUMBER(4),
ACTUAL_ENROL NUMBER(4),
AVAILABILITY NUMBER(4),
COURSE_TIME CHAR(7),
constraint PK_COURSE primary key (COURSEID)
);
/*==============================================================*/
/* Table: DEPARTMENT */
/*==============================================================*/
create table DEPARTMENT
(
DEPTID CHAR(8) not null,
DEPTNAME VARCHAR2(20),
DEPTCONTACTNO NUMBER(10),
BUILDING VARCHAR2(5),
constraint PK_DEPARTMENT primary key (DEPTID)
);
/*==============================================================*/
/* Table: ENROLS */
/*==============================================================*/
create table ENROLS
(
STUID CHAR(8) not null,
CLASSID CHAR(8) not null,
constraint PK_ENROLS primary key (STUID, CLASSID)
);
/*==============================================================*/
/* Table: HAS_PREREQUISITE */
/*==============================================================*/
create table HAS_PREREQUISITE
(
COURSEID CHAR(8) not null,
PREREQUISITEID CHAR(8) not null,
constraint PK_HAS_PREREQUISITE primary key (COURSEID, PREREQUISITEID)
);
/*==============================================================*/
/* Table: STAFF */
/*==============================================================*/
create table STAFF
(
STAFFID CHAR(8) not null,
DEPARTMENTID CHAR(8) not null,
STAFFNAME VARCHAR2(50),
STAFFADDRESS VARCHAR2(70),
STAFFCONTACTNO NUMBER(10),
STAFFEMAIL VARCHAR2(50),
OFFICENO NUMBER(5),
ROLE VARCHAR2(10),
constraint PK_STAFF primary key (STAFFID)
);
/*==============================================================*/
/* Table: STUDENT */
/*==============================================================*/
create table STUDENT
(
STUID CHAR(8) not null,
DEGREE VARCHAR2(10),
MAJOR VARCHAR2(10),
STU_NAME VARCHAR2(50),
STU_ADDRESS VARCHAR2(70),
CONTACTNO NUMBER(10),
EMAIL VARCHAR2(50),
constraint PK_STUDENT primary key (STUID)
);
/*==============================================================*/
/* Table: TEACHING_INFORMATION */
/*==============================================================*/
create table TEACHING_INFORMATION
(
STAFFID CHAR(8) not null,
COURSEID CHAR(8) not null,
SEMESTER CHAR(2) not null,
YEAR NUMBER(4) not null,
constraint PK_TEACHING_INFORMATION primary key (STAFFID, COURSEID, SEMESTER, YEAR)
);
/*==============================================================*/
/* Table: TUT_PRAC */
/*==============================================================*/
create table TUT_PRAC
(
CLASSID CHAR(8) not null,
COURSEID CHAR(8) not null,
STAFFID CHAR(8) not null,
TYPE VARCHAR2(5),
DAY VARCHAR2(10),
TIME DATE,
ROOMID CHAR(10),
NO_OF_SEATS NUMBER(2),
constraint PK_TUT_PRAC primary key (CLASSID)
);
alter table ACADEMIC_REC
add constraint FK_ACADEMIC_RELATIONS_STUDENT foreign key (STUID)
references STUDENT (STUID);
alter table ACADEMIC_REC
add constraint FK_ACADEMIC_RELATIONS_COURSE foreign key (COURSEID)
references COURSE (COURSEID);
alter table COURSE
add constraint FK_COURSE_OFFERS_DEPARTME foreign key (DEPTID)
references DEPARTMENT (DEPTID);
alter table ENROLS
add constraint FK_ENROLS_ENROLS_STUDENT foreign key (STUID)
references STUDENT (STUID);
alter table ENROLS
add constraint FK_ENROLS_ENROLS2_TUT_PRAC foreign key (CLASSID)
references TUT_PRAC (CLASSID);
alter table HAS_PREREQUISITE
add constraint FK_HAS_PRER_HAS_PRERE_COURSE foreign key (COURSEID)
references COURSE (COURSEID);
alter table HAS_PREREQUISITE
add constraint FK_HAS_PRER_HAS_PRERE_COURSE foreign key (PREREQUISITEID)
references COURSE (COURSEID);
alter table STAFF
add constraint FK_STAFF_RELATIONS_DEPARTME foreign key (DEPARTMENTID)
references DEPARTMENT (DEPTID);
alter table TEACHING_INFORMATION
add constraint FK_TEACHING_RELATIONS_STAFF foreign key (STAFFID)
references STAFF (STAFFID);
alter table TEACHING_INFORMATION
add constraint FK_TEACHING_RELATIONS_COURSE foreign key (COURSEID)
references COURSE (COURSEID);
alter table TUT_PRAC
add constraint FK_TUT_PRAC_HAS_COURSE foreign key (COURSEID)
references COURSE (COURSEID);
alter table TUT_PRAC
add constraint FK_TUT_PRAC_RELATIONS_STAFF foreign key (STAFFID)
references STAFF (STAFFID);
我在 sql developer 中这样做，并且在使用它方面相当新，希望有助于找出解决方案
同样在教学信息表中，staffid 和 courseid 取自其父表，（学期）和（年）是教职员工和课程之间具有多对多基数的关联实体的属性。
课程-教学信息-员工