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DROP TABLE EMPLOYEE;
DROP TABLE DEPARTMENT;
DROP TABLE COMPANY;
CREATE TABLE COMPANY (
ID INT PRIMARY KEY NOT NULL GENERATED ALWAYS AS IDENTITY,
NAME VARCHAR(30));
CREATE TABLE DEPARTMENT (ID INT PRIMARY KEY NOT NULL GENERATED ALWAYS AS IDENTITY,
NAME VARCHAR(30),
LOCATION VARCHAR(30),
DEPNUMBER VARCHAR(10),
COMPANYID INT);
CREATE TABLE EMPLOYEE (ID INT PRIMARY KEY NOT NULL GENERATED ALWAYS AS IDENTITY,
NAME VARCHAR(30),
SN VARCHAR(10),
MANAGER SMALLINT,
DEPARTMENTID INT);
INSERT INTO COMPANY (NAME) VALUES('ACME Publishing');
INSERT INTO COMPANY (NAME) VALUES('Do-rite plumbing');
INSERT INTO COMPANY (NAME) VALUES('MegaCorp');
INSERT INTO DEPARTMENT (NAME, LOCATION, DEPNUMBER, COMPANYID) VALUES('Advanced Technologies','NY','123', 1);
INSERT INTO DEPARTMENT (NAME, LOCATION, DEPNUMBER, COMPANYID) VALUES('Default Name 2','','', 1);
INSERT INTO DEPARTMENT (NAME, LOCATION, DEPNUMBER, COMPANYID) VALUES('Default Name 3','','', 1);
INSERT INTO DEPARTMENT (NAME, LOCATION, DEPNUMBER, COMPANYID) VALUES('Default Name 4','','', 1);
INSERT INTO DEPARTMENT (NAME, LOCATION, DEPNUMBER, COMPANYID) VALUES('Default Name 5','','', 1);
INSERT INTO DEPARTMENT (NAME, LOCATION, DEPNUMBER, COMPANYID) VALUES('Default Name 6','','', 1);
INSERT INTO DEPARTMENT (NAME, LOCATION, DEPNUMBER, COMPANYID) VALUES('Default Name 7','','', 1);
INSERT INTO DEPARTMENT (NAME, LOCATION, DEPNUMBER, COMPANYID) VALUES('Default Name 8','','', 1);
INSERT INTO EMPLOYEE (NAME, SN, MANAGER, DEPARTMENTID) VALUES('John Jones','E0001', 0, 1);
INSERT INTO EMPLOYEE (NAME, SN, MANAGER, DEPARTMENTID) VALUES('Mary Smith','E0002', 1, null);
INSERT INTO EMPLOYEE (NAME, SN, MANAGER, DEPARTMENTID) VALUES('Jane Doe','E0003', 0, 1);
INSERT INTO EMPLOYEE (NAME, SN, MANAGER, DEPARTMENTID) VALUES('Al Smith','E0004', 1, 1);
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