HR.sql - REM REM Create the REGIONS table to hold region...

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REM ******************************************************************** REM Create the REGIONS table to hold region information for locations REM HR.LOCATIONS table has a foreign key to this table. CREATE TABLE regions ( region_id NUMBER CONSTRAINT region_id_nn NOT NULL , region_name VARCHAR2(25) ); CREATE UNIQUE INDEX reg_id_pk ON regions (region_id); ALTER TABLE regions ADD ( CONSTRAINT reg_id_pk PRIMARY KEY (region_id) ) ; REM ******************************************************************** REM Create the COUNTRIES table to hold country information for customers REM and company locations. REM OE.CUSTOMERS table and HR.LOCATIONS have a foreign key to this table. CREATE TABLE countries ( country_id CHAR(2) CONSTRAINT country_id_nn NOT NULL , country_name VARCHAR2(40) , region_id NUMBER , CONSTRAINT country_c_id_pk PRIMARY KEY (country_id) ) ORGANIZATION INDEX; ALTER TABLE countries ADD ( CONSTRAINT countr_reg_fk FOREIGN KEY (region_id) REFERENCES regions(region_id) ) ; REM ******************************************************************** REM Create the LOCATIONS table to hold address information for company departments. REM HR.DEPARTMENTS has a foreign key to this table. CREATE TABLE locations ( location_id NUMBER(4) , street_address VARCHAR2(40) , postal_code VARCHAR2(12) , city VARCHAR2(30) CONSTRAINT loc_city_nn NOT NULL , state_province VARCHAR2(25) , country_id CHAR(2) ) ; CREATE UNIQUE INDEX loc_id_pk ON locations (location_id) ; ALTER TABLE locations ADD ( CONSTRAINT loc_id_pk PRIMARY KEY (location_id) , CONSTRAINT loc_c_id_fk
FOREIGN KEY (country_id) REFERENCES countries(country_id) ) ; Rem Useful for any subsequent addition of rows to locations table Rem Starts with 3300 CREATE SEQUENCE locations_seq START WITH 3300 INCREMENT BY 100 MAXVALUE 9900 NOCACHE NOCYCLE; REM ******************************************************************** REM Create the DEPARTMENTS table to hold company department information. REM HR.EMPLOYEES and HR.JOB_HISTORY have a foreign key to this table. CREATE TABLE departments ( department_id NUMBER(4) , department_name VARCHAR2(30) CONSTRAINT dept_name_nn NOT NULL , manager_id NUMBER(6) , location_id NUMBER(4) ) ; CREATE UNIQUE INDEX dept_id_pk ON departments (department_id) ; ALTER TABLE departments ADD ( CONSTRAINT dept_id_pk PRIMARY KEY (department_id) , CONSTRAINT dept_loc_fk FOREIGN KEY (location_id) REFERENCES locations (location_id) ) ; Rem Useful for any subsequent addition of rows to departments table Rem Starts with 280 CREATE SEQUENCE departments_seq START WITH 280 INCREMENT BY 10 MAXVALUE 9990 NOCACHE NOCYCLE; REM ******************************************************************** REM Create the JOBS table to hold the different names of job roles within the company. REM HR.EMPLOYEES has a foreign key to this table. CREATE TABLE jobs ( job_id VARCHAR2(10) , job_title VARCHAR2(35) CONSTRAINT job_title_nn NOT NULL , min_salary NUMBER(6) , max_salary NUMBER(6) ) ; CREATE UNIQUE INDEX job_id_pk ON jobs (job_id) ;
ALTER TABLE jobs ADD ( CONSTRAINT job_id_pk PRIMARY KEY(job_id) ) ; REM ******************************************************************** REM Create the EMPLOYEES table to hold the employee personnel REM information for the company. REM HR.EMPLOYEES has a self referencing foreign key to this table.

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