I can't insert data into the table due to an sql error : ***This is the error I get when I insert the data:***

INSERT INTO "44581114"."TEACHING_INFORMATION" (STAFFID, COURSEID, SEMESTER, YEAR) VALUES ('11223344', 'ISYS224', 'S3', '2014')
ORA-02291: integrity constraint (44581114.FK_TEACHING_RELATIONS_COURSE) violated - parent key not found
ORA-06512: at line 1


One error saving changes to table "44581114"."TEACHING_INFORMATION":
Row 1: ORA-02291: integrity constraint (44581114.FK_TEACHING_RELATIONS_COURSE) violated - parent key not found
ORA-06512: at line 1

***If it helps i have attached the DDL script here:***

/*==============================================================*/

/* 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);


***I'm doing this in sql developer and fairly new at using it hope that helps in figuring the solution***

***Also in teaching information table the staffid and courseid are taken from their parent tables and (semester) and (year) are the attributes of the associative entity between staff & course with many to many cardinalities***  

course- *teaching information*-staff 

