Answersheet.pdf

ANSWER SHEET
Student code:

1513804

Student name:

NGUYỄN XUÂN TRỰC

1.
- Your create table statement is:
CREATE TABLE fudgemart_agents (
agent_id

INT

IDENTITY(1,1),

agent_name

VARCHAR(50),

agent_address

VARCHAR(50),

agent_country

VARCHAR(2),

agent_created_date

DATETIME

CHECK (agent_created_date <= GETDATE()),

BIT

DEFAULT 1

agent_manager_id INT,
agent_status

NOT NULL,

CONSTRAINT PK_agents_id PRIMARY KEY(agent_id),
CONSTRAINT FK_agents_employees FOREIGN KEY(agent_manager_id) REFERENCES
fudgemart_employees(employee_id)
);

- Your create index statement is:
CREATE INDEX idx_country ON fudgemart_agents(agent_country);

2. Database diagram (with the additional table fudgemart_agents) is printed as below


3. Select satement 3.a
SELECT
FROM
WHERE

*
fudgemart_employees
employee_department = 'Electronics' AND YEAR(GETDATE())-YEAR(employee_birthdate)>30;

Select statement 3.b
SELECT
FROM
WHERE

*
fudgemart_products
product_retail_price = 2*product_wholesale_price;

4. Create view statement 4a
CREATE VIEW products_vendor_mikey AS
SELECT
*
FROM
fudgemart_vendors
INNER JOIN
fudgemart_products
WHERE
vendor_name='Mikey'
AND product_is_active=1;

ON

vendor_id=product_vendor_id

Create view statement 4b

CREATE VIEW payrolltimes AS
SELECT
fet.timesheet_employee_id, fet.timesheet_payrolldate
FROM
fudgemart_employee_timesheets fet, (
SELECT
fet.timesheet_employee_id, COUNT(fet.timesheet_employee_id) AS C
FROM
fudgemart_employee_timesheets fet
WHERE
fet.timesheet_hours < 40
GROUP BY
fet.timesheet_employee_id) AS A
WHERE
fet.timesheet_employee_id = A.timesheet_employee_id;


5.
5a. Create stored procedure statement
CREATE PROCEDURE p_fudgemart_add_new_vendor
@vendor_id
INT,
@vendor_name
VARCHAR(50),
@vendor_phone
VARCHAR(20),
@vendor_website
VARCHAR(1000)
AS
BEGIN

SET NOCOUNT ON;
IF EXISTS (SELECT * FROM fudgemart_vendors WHERE vendor_id=@vendor_id)
BEGIN
PRINT 'The vendor id has already existed in the database';
RETURN 0
END
ELSE IF EXISTS (SELECT * FROM fudgemart_vendors WHERE vendor_name=@vendor_name)
BEGIN
PRINT 'The vendor name has already existed in the database';
RETURN 0
END
ELSE
INSERT INTO fudgemart_vendors (vendor_id, vendor_name, vendor_phone, vendor_website)
VALUES(@vendor_id, @vendor_name, @vendor_phone, @vendor_website)
RETURN @@ROWCOUNT
END


5b. Statements for excuting the procedure to insert data
INSERT INTO fudgemart_vendors VALUES (21, 'Vinmart', '555-2222', 'www.vinmart.com');
INSERT INTO fudgemart_vendors VALUES (22, 'Mikerosoft', '555-8888', 'www.microsoft.com');

5c. Create stored procedure statement
CREATE PROCEDURE p_fudgemart_update_price_product
@product_id
INT,
@diff_price
MONEY,
@mode
BIT

AS
BEGIN
SET NOCOUNT ON;
IF (@product_id <= 0)
BEGIN
PRINT 'the diff price must be greater than 0'
RETURN 0
END
ELSE
BEGIN
IF (@mode = 1)
UPDATE fudgemart_products SET product_retail_price=product_wholesale_price+@diff_price;
ELSE IF (@mode = 0)
UPDATE fudgemart_products SET product_retail_price=product_wholesale_price-@diff_price;
END
END


5d. Create trigger statements
CREATE TRIGGER trg_insert_agents
ON fudgemart_agents
FOR INSERT
AS
BEGIN
DECLARE @country VARCHAR(2)
DECLARE @agent_created_date DATETIME
SET @country = (SELECT agent_country FROM inserted)
SET @agent_created_date = (SELECT agent_created_date FROM inserted)
IF (@country = NULL)
SET @country = 'VN'

ELSE
BEGIN
IF EXISTS (SELECT * FROM inserted WHERE inserted.agent_country = @country)
RETURN
END
IF (@agent_created_date = NULL)
SET @agent_created_date = GETDATE()
INSERT INTO fudgemart_agents(agent_id, agent_name, agent_address, agent_country, agent_created_date,
agent_manager_id, agent_status)
SELECT agent_id, agent_name, agent_address, agent_country, agent_created_date, agent_manager_id,
agent_status
FROM inserted
END

6.
6a. Create function statement
….


6b. Select statement which calls the function
….

6c. Create function statement
….