CREATE TABLE employeeskit ( id_emp NUMBER(5,0) PRIMARY KEY, id_department NUMBER(2,0),first_name VARCHAR2(20), last_name VARCHAR2(20), tel_number NUMBER(10,0), adress_emp VARCHAR2(20) );
CREATE TABLE customersweb ( id_customer NUMBER(5,0) PRIMARY KEY,id_order NUMBER(5,0) ,customer_fname VARCHAR(30), customer_lname VARCHAR(30), adress_customer VARCHAR(30), email_customer VARCHAR(30), tel_customer NUMBER(10,0), reg_date DATE);


ALTER TABLE employeeskit ADD CONSTRAINT id_departmentt FOREIGN KEY (id_department) REFERENCES departmentsweb(id_department);
ALTER TABLE employeeskit ADD salary NUMBER(6);

INSERT INTO employeeskit VALUES(2,12 ,'Iannis','Paris',0721615778,'Ana Ipatescu 12',6000);
INSERT INTO employeeskit VALUES(3,13,'Bogdan','Niculae',0721615771,'Calea Grivitei 81',3450);
INSERT INTO employeeskit VALUES(5,11,'Gina','Enache',0721615775,'Drumul Taberei 72',2200);
INSERT INTO employeeskit VALUES(4,10,'Emil','Gheorghe',0721615777,'Dorobantilor 22',1890);

DESC employeeskit;
SELECT * FROM employeeskit;
SELECT * FROM departmentsweb;
SELECT * FROM customersweb;

ALTER TABLE customersweb ADD CONSTRAINT id_order FOREIGN KEY (id_order) REFERENCES ordersweb(id_order);

CREATE TABLE departmentsweb (id_department NUMBER(2,0) PRIMARY KEY, department_name VARCHAR2(10), department_location VARCHAR2(10), department_email VARCHAR2(10), department_phone NUMBER(10,0), department_manager VARCHAR2(20), department_workhours_s DATE, department_workhours_f DATE);
ALTER TABLE departmentsweb MODIFY (department_location VARCHAR2(20), department_email VARCHAR2(30), department_name VARCHAR2(30));
ALTER TABLE departmentsweb MODIFY (DEPARTMENT_WORKHOURS_S VARCHAR(20),DEPARTMENT_WORKHOURS_f VARCHAR(20));
ALTER TABLE employeeskit ADD CONSTRAINT id_department FOREIGN KEY (id_department) REFERENCES departmentsweb(id_department);
SELECT * FROM departmentsweb;
SELECT * FROM employeeskit;
INSERT INTO departmentsweb VALUES (10,'HR','Victoriei','hr@gmail.com',0721615779,'Emil Gheorghe','10:30:00','16:30:00');
INSERT INTO departmentsweb VALUES (11,'PR','Victoriei','pr@gmail.com',0721615779,'Gina Enache','10:30:00','16:30:00');
INSERT INTO departmentsweb VALUES (12,'ITfront','Victoriei','itfront@gmail.com',0721615779,'Paris Iannis','10:30:00','16:30:00');
INSERT INTO departmentsweb VALUES (13,'ITback','Victoriei','itback@gmail.com',0721615779,'Niculae Bogdan','10:30:00','16:30:00');


INSERT INTO customersweb VALUES(91,88,'Ion','Popa','Grivita','ion@gmail.com',0721615122,TO_DATE('17/12/2015', 'DD/MM/YYYY'));
INSERT INTO customersweb VALUES(92,66,'Doru','Lungoci','Dorobanti','doru@gmail.com',0721615122,TO_DATE('02/12/2016', 'DD/MM/YYYY'));
INSERT INTO customersweb VALUES(93,77,'Mihai','Dabuleanu','Unirii','mihai@gmail.com',0721615122,TO_DATE('30/10/2017', 'DD/MM/YYYY'));
INSERT INTO customersweb VALUES(94,55,'Ionel','Petrisor','Basarab','ionel@gmail.com',0721615122,TO_DATE('21/4/2017', 'DD/MM/YYYY'));

CREATE TABLE discountweb (id_discount NUMBER(2,0) PRIMARY KEY, discount_description VARCHAR2(30), discount_percent NUMBER(2,2));
CREATE TABLE servicesweb (id_services NUMBER(2,0) PRIMARY KEY, service_name VARCHAR2(30), service_price NUMBER(10,0), service_quantity NUMBER(3,0), service_status VARCHAR2(20));

CREATE TABLE ordersweb ( id_order NUMBER(2,0), PRIMARY KEY (id_order),id_services NUMBER(2,0), FOREIGN KEY (id_services) REFERENCES servicesweb(id_services),id_discount NUMBER(2,0),FOREIGN KEY (id_discount) REFERENCES discountweb(id_discount));
SELECT * FROM customersweb;
ALTER TABLE ordersweb ADD id_emp NUMBER(2);
ALTER TABLE ordersweb ADD id_customer NUMBER(2);
ALTER TABLE ordersweb ADD firm_name NUMBER(2);
ALTER TABLE ordersweb MODIFY firm_name VARCHAR2(20);
ALTER TABLE ordersweb ADD CONSTRAINT id_emp FOREIGN KEY (id_emp) REFERENCES employeeskit(id_emp);
ALTER TABLE ordersweb ADD CONSTRAINT id_customer FOREIGN KEY (id_customer) REFERENCES customersweb(id_customer);

SELECT * FROM ordersweb;
SELECT * FROM employeeskit;
SELECT * FROM customersweb;

INSERT INTO ordersweb VALUES(55,3,44,2);
INSERT INTO ordersweb VALUES(66,2,41,3);
INSERT INTO ordersweb VALUES(77,4,42,4);
INSERT INTO ordersweb VALUES(88,1,43,5);

INSERT INTO ordersweb VALUES(12,3,41,2,91,'Dores');
INSERT INTO ordersweb VALUES(34,2,41,3,92,'Petrochim');
INSERT INTO ordersweb VALUES(56,4,41,4,94,'Hidroelectrica');
INSERT INTO ordersweb VALUES(78,1,43,5,93,'Petrom');


SELECT * FROM ordersweb;

ALTER TABLE discountweb MODIFY (discount_description VARCHAR2(30), DISCOUNT_PERCENT NUMBER(2));

INSERT INTO discountweb(id_discount, discount_description, discount_percent) VALUES(41,'Christmas sales',10);
INSERT INTO discountweb(id_discount, discount_description, discount_percent)  VALUES(42,'Winter sales',15);
INSERT INTO discountweb(id_discount, discount_description, discount_percent)  VALUES(43,'Easter sales',10);
INSERT INTO discountweb(id_discount, discount_description, discount_percent)  VALUES(44,'BlackFriday sales',35);

INSERT INTO servicesweb VALUES(1,'Hosting',150,1,'OK');
INSERT INTO servicesweb VALUES(2,'Hosting+',450,1,'FULL');
INSERT INTO servicesweb VALUES(3,'WebforYou',1500,1,'OK');
INSERT INTO servicesweb VALUES(4,'Care+',550,1,'NA');

SELECT * FROM discountweb;
SELECT * FROM servicesweb;
SELECT * FROM ordersweb;

DESC ordersweb;
DESC employeeskit;
DESC customersweb;
DESC discountweb;
DESC servicesweb;