2.插入數據庫中一些數據

INSERT INTO department VALUES ('d1', 'Research', 'Dallas');
INSERT INTO department VALUES ('d2', 'Accounting', 'Seattle');
INSERT INTO department VALUES ('d3', 'Marketing', 'Dallas');

INSERT INTO employee VALUES (25348, 'Matthew', 'Smith','d3');
INSERT INTO employee VALUES (10102, 'Ann', 'Jones','d3');
INSERT INTO employee VALUES (18316, 'John', 'Barrimore', 'd1');
INSERT INTO employee VALUES (29346, 'James', 'James', 'd2');
INSERT INTO employee VALUES (9031, 'Elsa', 'Bertoni', 'd2');
INSERT INTO employee VALUES (2581, 'Elke', 'Hansel', 'd2');
INSERT INTO employee VALUES (28559, 'Sybill', 'Moser', 'd1');

INSERT INTO project VALUES ('p1', 'Apollo', 120000.00);
INSERT INTO project VALUES ('p2', 'Gemini', 95000.00);
INSERT INTO project VALUES ('p3', 'Mercury', 186500.00);

INSERT INTO works_on VALUES (10102,'p1', 'Analyst', '2006.10.1');
INSERT INTO works_on VALUES (10102, 'p3', 'Manager', '2008.1.1');
INSERT INTO works_on VALUES (25348, 'p2', 'Clerk', '2007.2.15');
INSERT INTO works_on VALUES (18316, 'p2', NULL, '2007.6.1');
INSERT INTO works_on VALUES (29346, 'p2', NULL, '2006.12.15');
INSERT INTO works_on VALUES (2581, 'p3', 'Analyst', '2007.10.15');
INSERT INTO works_on VALUES (9031, 'p1', 'Manager', '2007.4.15');
INSERT INTO works_on VALUES (28559, 'p1', 'NULL', '2007.8.1');
INSERT INTO works_on VALUES (28559, 'p2', 'Clerk', '2008.2.1');
INSERT INTO works_on VALUES (9031, 'p3', 'Clerk', '2006.11.15');
INSERT INTO works_on VALUES (29346, 'p1','Clerk', '2007.1.4');