drop table workon; drop table employee; drop table project; drop table division; create table division (did integer, dname varchar (25), managerID integer, constraint division_did_pk primary key (did) ); create table employee (empID integer, name varchar(30), salary float, did integer, constraint employee_empid_pk primary key (empid), constraint employee_did_fk foreign key (did) references division(did) ); create table project (pid integer, pname varchar(25), budget float, did integer, constraint project_pid_pk primary key (pid), constraint project_did_fk foreign key (did) references division(did) ); create table workon (pid integer, empID integer, hours integer, constraint workon_pk primary key (pid, empID), constraint workon_pid_fk foreign key (pid) references project(pid), constraint workon_empid_fk foreign key (empID) references employee(empID) ); /* loading the data into the database */ insert into division values (1,'engineering', 2); insert into division values (2,'marketing', 1); insert into division values (3,'human resource', 3); insert into division values (4,'Research and development', 5); insert into division values (5,'accounting', 4); insert into project values (1, 'DB development', 8000, 2); insert into project values (2, 'network development', 6000, 2); insert into project values (3, 'Web development', 5000, 3); insert into project

values (4, 'Wireless development', 5000, 1); insert into project values (5, 'security system', 6000, 4); insert into project values (6, 'system development', 7000, 1); insert into employee values (1,'kevin', 32000,2); insert into employee values (2,'joan', 42000,1); insert into employee values (3,'brian', 37000,3); insert into employee values (4,'larry', 82000,5); insert into employee values (5,'harry', 92000,4); insert into employee values (6,'peter', 45000,2); insert into employee values (7,'peter', 68000,3); insert into employee values (8,'smith', 39000,4); insert into employee values (9,'chen', 71000,1); insert into employee values (10,'kim', 46000,5); insert into employee values (11,'smith', 46000,1); insert into employee values (12,'joan', 48000,1); insert into employee values (13,'kim', 49000,2); insert into employee values (14,'austin', 46000,1); insert into employee values (15,'sam', 52000,5); insert into employee values (16,'Justin', 62000,2); insert into employee values (17,'Nacy', 52000,1); insert into employee values (18,'Marilyn', 52000,5); insert into employee values (19,'Kristie', 52000,1); insert into employee values (20,'John', 52000,3); insert into employee values (21,'Alex', 69000,1); insert into employee values (22,'Phil', 72000,2); insert into employee values (23,'Steve', 74000,4); insert into employee values (24,'Jenna', 69000,1); insert into employee values (25,'Alan', 62000,2); insert into employee values (26,'Julia', 69000,4); insert into employee

values (27,'Sandra', 72000,4); insert into employee values (28,'Joe', 74000,4); insert into employee values (29,'karl', 69000,5); insert into employee values (30,'grace', 62000,4); insert into workon values (3,1,30); insert into workon values (2,3,40); insert into workon values (5,4,30); insert into workon values (6,6,60); insert into workon values (4,3,70); insert into workon values (2,4,45); insert into workon values (5,3,90); insert into workon values (3,3,100); insert into workon values (6,8,30); insert into workon values (4,4,30); insert into workon values (5,8,30); insert into workon values (6,7,30); insert into workon values (6,9,40); insert into workon values (5,9,50); insert into workon values (4,6,45); insert into workon values (2,7,30); insert into workon values (1,8,30); insert into workon values (2,9,30); insert into workon values (1,9,30); insert into workon values (2,8,30); insert into workon values (1,7,30); insert into workon values (1,5,30); insert into workon values (1,6,30); insert into workon values (2,6,30); insert into workon values (2,12,30);

insert into workon values (3,13,30); insert into workon values (4,14,20); insert into workon values (4,15,40); insert into workon values (2,19,30); insert into workon values (1,19,30); insert into workon values (5,18,30); insert into workon values (3,17,30); insert into workon values (4,25,30); insert into workon values (3,16,30); insert into workon values (2,16,30); insert into workon values (2,22,30); insert into workon values (3,23,30); insert into workon values (4,24,20); insert into workon values (6,25,40); insert into workon values (3,21,40); insert into workon values (4,26,20); insert into workon values (4,27,40); insert into workon values (2,27,30); insert into workon values (1,26,30); insert into workon values (5,26,30); insert into workon values (3,26,30); insert into workon values (4,28,30); insert into workon values (3,28,30); insert into workon values (2,29,30); insert into workon values (2,30,30); insert into workon values (3,30,30); insert into workon values (4,21,20); insert into workon values (6,22,40); insert into workon values (1,30,40);

insert into workon values (3,9,10); insert into workon values (4,9,20);

1. List the name of division that has more than 1 project with budget over $1000 and have more than 2 employees working on it.

2. List the name of employees who is not from accounting division and work on project web development.

3. List the name of employees who work on more projects than all employees from 'marketing ' division.

4. List the name of each division that does not sponsor project DB development but has some employee(s) working on it.

5. Among all projects Chen works on, list the name of project that has lowest budget.

6. Among all employees who work on DB development, list the name of employee who makes least salary.

7. List the name of project that manager of Human Resource division spend more time than the manager of Marketing division.

8. List the name of employee who works on ALL projects sponsored by chens division (hint: there not exists a project from chens division that the employee to be selected does not work on).