study the use of the statements of CREATE, UPDATE, INSERT AND ALTER and do the following tasks (copy each task and show the SQL code and the results (table contents) for each task. Also refer to statements in loadDB Download loadDBfile to learn how the create/insert statements are formulated, including the naming convention.

a1. Use CREATE statement to create a table Client (ClientName, phone). Note ClientName is primary key and you must define this primary key in CREATE statement. Show the statement. Then use INSERT statement to add two client records into Client table (make up your own data for clients). Show the INSERT statements and use select statement to show the table contents.

a2 Use ALTER statements to add a foreign key ClientName as a constraint into the Project table. So that table Client has a one to many relationship with table Project. Note, you need to use TWO ALTER statements , one for adding attribute ClientName into Project table; one for adding foreign key constraint into Project table. Show the ALTER statements.

a3. User ALTER statement to Add an attribute Project_Count into Employee table (data type to be integer, refer to the data type used for Workon table (hours) in loadDB file).

a4. Use UPDATE statement to fill the value of Project_count of each employee record in Employee table. Namely, add the count of total number of projects an employee works on into Project_count in Employee table for each employee. Hint: you need a subquery in Update statement as follows

Update _________

Set _____ = (select count (pid) ...... )

Show the contents of Employee after update.

a5 Create a table Promotion_list (EMPID, Name, Salary, DivisionName) and

a6. load Promotion_list with the information of employees who make less than company average and work on at least 2 projects. (Hint use INSERT INTO SELECT statement ). Show the SQL codes and result.

a7. Add attribute Pname into WORKON table.

a8. Use UPDATE statement to fill name of project into WORKON table according to related PID value. ( hint: you need to use correlated subquery in where clause).

Part B

b1. Increase the budget of a project by 5% if there is a manager working on it .

b2. List the name of employee who works on a project sponsored by his/her own division. (corelated subquery)

b3. List the name of project that has budget that is higher than ALL projects from 'marketing' division.

b4. List the name of project that has budget that are higher than ALL projects from 'chen's division.

b5. List the name of employee who works on more projects than his/her divisional manager. Also list this manager's project count.

b6. List The name of division that has employee(s) who works on more than 2 projects sponsored by other divisions. (corelated subquery)

b7. List name of division that has highest salary cap ( total salary), and show the name of its manager and her/his salary.

b8. (BONUS) List the name of employee who works ONLY with his/her divisional colleagues on project(s). (Hint, namely, the employee (e) firstly works on project(s) , and secondly, there NOT EXISTS a project that e works on and another employee (ee) also works on but they are from different divisions.)

DATA

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) ); /* 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', 52000,3); 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 (2,8,30); insert into workon values (2,9,30); insert into workon values (1,9,30); insert into workon values (1,8,30); 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);