How to insert data into two tables linke with foreign key..

I have two tables
1)EMP(emp_ID,username,emp_type_code)
emp_ID is primary key, emp_type_code is a foreign key references emptype table.
2)emptype(emp_type_code,emp_type_descripton)
emp_type_code is primary key
Could anyone help me ..how to insert data into EMP table. How to insert data into two tables linke with foreign key..

CREATE TABLE "CATDB"."DWDIMUSER"
"USER_ID" NUMBER(10,0) NOT NULL ENABLE,
"SPECIALTY_ID" NUMBER(10,0),
"FULLNAME" VARCHAR2(20 BYTE),
"FNAME" VARCHAR2(20 BYTE),
"LNAME" VARCHAR2(20 BYTE),
"USER_SUBTYPE" VARCHAR2(20 BYTE),
CONSTRAINT "DIMUSER_PK" PRIMARY KEY ("USER_ID") USING INDEX PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT) TABLESPACE "CATDB" ENABLE,
CONSTRAINT "DIMUSER_DIMSPECIALTY_FK" FOREIGN KEY ("SPECIALTY_ID") REFERENCES "CATDB"."DWDIMSPECIALTY" ("SPECIALTY_ID") DISABLE
CREATE TABLE "CATDB"."DIMSPECIALTY"
"SPECIALTY_ID" NUMBER(10,0) NOT NULL ENABLE,
"SPECIALTY_NAME" VARCHAR2(100 BYTE),
CONSTRAINT "DIMSPECIALTY_PK" PRIMARY KEY ("SPECIALTY_ID") USING INDEX PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT) TABLESPACE "CATDB" ENABLE
INSERT INTO DIMUSER (FullName, FNAME, LNAME, USER_TYPE, USER_SUBTYPE)
SELECT DISTINCT
Engineer AS FullName,
regexp_substr(Engineer , '[^,| ]+', 1, 1) as FName,
regexp_substr(Engineer , '[^,| ]+', 1, 2) as LName ,
'Engineer'
FROM EMPLOYEELOOKUP;
INSERT INTO DIMSPECIALTY (SPECIALTY_NAME)
SELECT DISTINCT SPECIALITY
FROM EMPLOYEELOOKUP;
COMMIT;
CREATE TABLE employeelookup ...IS A TABLE THAT HAS ALL THE DATA NEDED TO BE FILLED IN BOTHE TABLES...
CREATE TABLE "CATDB"."EMPLOYEELOOKUP"
"EMPLOYEELOOKUP_ID" NUMBER(10,0) NOT NULL ENABLE,
"ENGINEER" VARCHAR2(25 BYTE),
"SPECIALTY" VARCHAR2(20 BYTE),
CONSTRAINT "DIMSPECIALTY_PK" PRIMARY KEY ("EMPLOYEELOOKUP_ID") USING INDEX PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT) TABLESPACE "CATDB" ENABLE
DATA IN EMPLOYEELOOKUP
Engineer, Specialty,
John, Dow, Electronis,
Dow, Jons, Technician
Stan Smithers Sales
Mark, Richards Marketing
Jenny, Lane Marketing
John, Lee Sales
I NEED TO LOAD THE FOREIGN KEY IN DIMUSER FROM THE DIMSPECIALTY TABLE?
BY USING THE LOOKUP TABLE TO MARCH THE NAMES UNDER THE Engineer COLUMN, SPECIALTY COLUMNE DISTICTIVLY BY JOINING THE DIMSPECILTY TO RISTIVE THE PRIMARY KEY AND FILL IT IN THE DIMUSER TABLE AS A FOREIGNE KEY.

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