CREATE USER hr IDENTIFIED BY oracle_4U;

ALTER USER hr DEFAULT TABLESPACE system QUOTA UNLIMITED ON system;

ALTER USER hr TEMPORARY TABLESPACE temp;

GRANT CREATE SESSION, CREATE VIEW, ALTER SESSION, CREATE SEQUENCE TO hr;
GRANT CREATE SYNONYM, CREATE DATABASE LINK, RESOURCE , UNLIMITED TABLESPACE TO hr;

ALTER SESSION SET CURRENT_SCHEMA=HR;

ALTER SESSION SET NLS_LANGUAGE=American;
ALTER SESSION SET NLS_TERRITORY=America;

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)
    ) ;
	
INSERT INTO departments VALUES 
        ( 10
        , 'Administration'
        , 200
        , 1700
        );

INSERT INTO departments VALUES 
        ( 20
        , 'Marketing'
        , 201
        , 1800
        );
                                
INSERT INTO departments VALUES 
        ( 30
        , 'Purchasing'
        , 114
        , 1700
	);
                
INSERT INTO departments VALUES 
        ( 40
        , 'Human Resources'
        , 203
        , 2400
        );

INSERT INTO departments VALUES 
        ( 50
        , 'Shipping'
        , 121
        , 1500
        );
                
INSERT INTO departments VALUES 
        ( 60 
        , 'IT'
        , 103
        , 1400
        );
                
INSERT INTO departments VALUES 
        ( 70 
        , 'Public Relations'
        , 204
        , 2700
        );
                
INSERT INTO departments VALUES 
        ( 80 
        , 'Sales'
        , 145
        , 2500
        );
                
INSERT INTO departments VALUES 
        ( 90 
        , 'Executive'
        , 100
        , 1700
        );

INSERT INTO departments VALUES 
        ( 100 
        , 'Finance'
        , 108
        , 1700
        );
                
INSERT INTO departments VALUES 
        ( 110 
        , 'Accounting'
        , 205
        , 1700
        );

INSERT INTO departments VALUES 
        ( 120 
        , 'Treasury'
        , NULL
        , 1700
        );

INSERT INTO departments VALUES 
        ( 130 
        , 'Corporate Tax'
        , NULL
        , 1700
        );

INSERT INTO departments VALUES 
        ( 140 
        , 'Control And Credit'
        , NULL
        , 1700
        );

INSERT INTO departments VALUES 
        ( 150 
        , 'Shareholder Services'
        , NULL
        , 1700
        );

INSERT INTO departments VALUES 
        ( 160 
        , 'Benefits'
        , NULL
        , 1700
        );

INSERT INTO departments VALUES 
        ( 170 
        , 'Manufacturing'
        , NULL
        , 1700
        );

INSERT INTO departments VALUES 
        ( 180 
        , 'Construction'
        , NULL
        , 1700
        );

INSERT INTO departments VALUES 
        ( 190 
        , 'Contracting'
        , NULL
        , 1700
        );

INSERT INTO departments VALUES 
        ( 200 
        , 'Operations'
        , NULL
        , 1700
        );

INSERT INTO departments VALUES 
        ( 210 
        , 'IT Support'
        , NULL
        , 1700
        );

INSERT INTO departments VALUES 
        ( 220 
        , 'NOC'
        , NULL
        , 1700
        );

INSERT INTO departments VALUES 
        ( 230 
        , 'IT Helpdesk'
        , NULL
        , 1700
        );

INSERT INTO departments VALUES 
        ( 240 
        , 'Government Sales'
        , NULL
        , 1700
        );

INSERT INTO departments VALUES 
        ( 250 
        , 'Retail Sales'
        , NULL
        , 1700
        );

INSERT INTO departments VALUES 
        ( 260 
        , 'Recruiting'
        , NULL
        , 1700
        );

INSERT INTO departments VALUES 
        ( 270 
        , 'Payroll'
        , NULL
        , 1700
        );

		
COMMIT;

EXECUTE dbms_stats.gather_schema_stats( -
        'HR'                            ,       -
        granularity => 'ALL'            ,       -
        cascade => TRUE                 ,       -
        block_sample => TRUE            )