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Chapter Three – Structured Query Language
Database Concepts
Seventh Edition
David M. Kroenke • David J. Auer
Instructor’s Manual
Prepared by David J. Auer & Robert J. Mills
CHAPTER THREE
STRUCTURED QUERY LANGUAGE
Page 1
Chapter Three – Structured Query Language
3.1
If you haven’t done so, create the WPC database, tables, and relationships described
in this chapter, using the SQL DBMS of your choice. Be sure to populate the tables
with the data shown in Figure 3-2.
See Figure 3-1 for the SQL statements to create the database tables. See Figure 3-2 for the
SQL statements to populate the database. Note that the data used in these exercises in the
original data before the SQL commands in Chapter 3 were run. If you have already run those
commands, you will get slightly different results.
/*****
DEPARTMENT DATA
SELECT * FROM DEPARTMENT;
/*****
EMPLOYEE DATA
SELECT * FROM EMPLOYEE;
/*****
PROJECT DATA
SELECT * FROM PROJECT;
***********************************/
*************************************/
**************************************/
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Chapter Three – Structured Query Language
/*****
ASSIGMENT DATA
*************************************/
SELECT * FROM ASSIGNMENT;
3.2
Using the SQL DBMS of your choice, create and run queries to answer the questions
in exercise AW.3.1.
Using [Access] SQL, create and run queries to answer the questions that follow. Save each
query using the query name format SQLQuery-AWE-3-1-## where the ## sign is replaced by
the letter designator of the question. For example, the first query will be saved as SQLQueryAWE-3-1-A.
For SQL Server:
A.
What projects are in the PROJECT table? Show all information for each project.
/*****
Question A – SQL-Query-AWE-3-1-A.sql
SELECT * FROM PROJECT;
Page 3
***************/
Chapter Three – Structured Query Language
B.
What are the ProjectID, ProjectName, StartDate, and EndDate values of projects
in the PROJECT table?
/*****
SELECT
FROM
C.
What projects in the PROJECT table started before August 1, 2014? Show all
the information for each project.
/*****
SELECT
FROM
WHERE
D.
Question C – SQL-Query-AWE-3-1-C.sql
*
PROJECT
StartDate <'01-AUG-14';
***************/
What projects in the PROJECT table have not been completed? Show all the
information for each project.
/*****
SELECT
FROM
WHERE
E.
Question B – SQL-Query-AWE-3-1-B.sql
***************/
ProjectID, ProjectName, StartDate, EndDate
PROJECT;
Question D – SQL-Query-AWE-3-1-D.sql
*
PROJECT
EndDate IS NULL;
***************/
Who are the employees assigned to each project? Show ProjectID,
EmployeeNumber, LastName, FirstName, and Phone.
/*****
SELECT
Phone
FROM
Question E – SQL-Query-AWE-3-1-E.sql
**************/
ProjectID, E.EmployeeNumber, LastName, FirstName,
ASSIGNMENT AS A JOIN EMPLOYEE AS E
ON A.EmployeeNumber=E.EmployeeNumber;
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Chapter Three – Structured Query Language
F.
Who are the employees assigned to each project? Show ProjectID,
ProjectName, and Department. Show EmployeeNumber, LastName, FirstName,
and Phone.
/*****
SELECT
FROM
Question F – SQL-Query-AWE-3-1-F.sql
*************/
P.ProjectID, ProjectName, P.Department,
E.EmployeeNumber,
LastName, FirstName, Phone
ASSIGNMENT AS A JOIN EMPLOYEE AS E
ON A.EmployeeNumber=E. EmployeeNumber
JOIN PROJECT AS P
ON A.ProjectID=P.ProjectID;
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Chapter Three – Structured Query Language
G.
Who are the employees assigned to each project? Show ProjectID,
ProjectName, Department, and Department Phone. Show EmployeeNumber,
LastName, FirstName, and Employee Phone. Sort by ProjectID in ascending
order.
/*****
SELECT
Question G – SQL-Query-AWE-3-1-G.sql
*************/
P.ProjectID, ProjectName, D.DepartmentName,
D.Phone AS DepartmentPhone,
E.EmployeeNumber, LastName, FirstName,
E.Phone AS EmployeePhone
FROM
ASSIGNMENT AS A JOIN EMPLOYEE AS E
ON A.EmployeeNumber=E. EmployeeNumber
JOIN PROJECT AS P
ON A.ProjectID=P.ProjectID
JOIN DEPARTMENT AS D
ON P.Department=D.DepartmentName
ORDER BY P.ProjectID;
H.
Who are the employees assigned to projects run by the Marketing Department?
Show ProjectID, ProjectName, Department, and Department Phone. Show
EmployeeNumber, LastName, FirstName, and Employee Phone. Sort by
ProjectID in ascending order.
/*****
Question H – SQL-Query-AWE-3-1-H.sql
SELECT
***************/
P.ProjectID, ProjectName, D.DepartmentName,
D.Phone AS DepartmentPhone,
E.EmployeeNumber, LastName, FirstName,
E.Phone AS EmployeePhone
FROM
ASSIGNMENT AS A JOIN EMPLOYEE AS E
ON A.EmployeeNumber=E. EmployeeNumber
JOIN PROJECT AS P
ON A.ProjectID=P.ProjectID
JOIN DEPARTMENT AS D
ON P.Department=D.DepartmentName
WHERE
DepartmentName='Marketing'
ORDER BY P.ProjectID;
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Chapter Three – Structured Query Language
I.
How many projects are being run by the Marketing Department? Be sure to
assign an appropriate column name to the computed results.
/*****
SELECT
FROM
WHERE
J.
What is the total MaxHours of projects being run by the Marketing Department?
Be sure to assign an appropriate column name to the computed results.
/*****
SELECT
FROM
WHERE
K.
Question J – SQL-Query-AWE-3-1-J.sql
**************/
SUM(MaxHours) AS TotalMaxHoursForMarketingDeptProjects
PROJECT
Department='Marketing';
What is the average MaxHours of projects being run by the Marketing
Department? Be sure to assign an appropriate column name to the computed
results.
/*****
SELECT
FROM
WHERE
L.
Question I – SQL-Query-AWE-3-1-I.sql
**************/
COUNT(*) AS NumberOfMarketingDeptProjects
PROJECT
Department='Marketing';
Question K – SQL-Query-AWE-3-1-K.sql
**************/
AVG(MaxHours) AS AverageMaxHoursForMarketingDeptProjects
PROJECT
Department='Marketing';
How many projects are being run by each department? Be sure to display each
DepartmentName and to assign an appropriate column name to the computed
results.
/*****
SELECT
FROM
GROUP BY
Question L – SQL-Query-AWE-3-1-L.sql
**************/
Department, COUNT(*) AS NumberOfDeptProjects
PROJECT
Department;
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Chapter Three – Structured Query Language
3.3
Using the SQL DBMS of your choice, complete steps A through E in exercise AW.3.3,
but exclude step F.
WPC has decided to keep track of computers used by the employees. In order to do
this, two new tables will be added to the database. The schema for these tables, as
related to the existing EMPLOYEE table is:
EMPLOYEE (EmployeeNumber, FirstName, LastName, Department, Phone, Email)
COMPUTER (SerialNumber, Make, Model, ProcessorType, ProcessorSpeed, MainMemory,
DiskSize)
COMPUTER_ASSIGNMENT (SerialNumber, EmployeeNumber, DateAssigned,
DateReassigned)
The referential integrity constraints are:
Serial Number in COMPUTER_ASSIGNMENT must exist in SerialNumber in COMPUTER
EmployeeNumber in COMPUTER_ASSIGNMENT must exist in EmployeeNumber in
EMPLOYEE
EmployeeNumber is a surrogate key and never changes. Employee records are never
deleted from the database. SerialNumber is not a surrogate key because it is not
generated by the database. However, a computer’s SerialNumber never changes, and,
therefore, there is no need to cascade updates. When a computer is at its end of life,
the record in COMPUTER for that computer and all associated records in
COMPUTER_ASSIGNMENT are deleted from the database.
For SQL Server 2014 the questions and their solutions are as follows:
A.
Figure 3-23 shows the column characteristics for the WPC COMPUTER table.
Using the column characteristics, use Access SQL to create the COMPUTER
table and its associated constraints in the WPC.accdb database. Are there any
table characteristics that cannot be created in SQL? If so, what are they? Use
the Access GUI to finish setting table characteristics, if necessary.
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Chapter Three – Structured Query Language
The required work here is to create the COMPUTER table in the DBMS of choice using SQL.
Although Access SQL has limitations, there will be no SQL limitations in SQL Server 2014 Express
or MySQL.
CREATE TABLE COMPUTER(
SerialNumber
Int
NOT NULL,
Make
Char(12)
NOT NULL,
Model
Char(24)
NOT NULL,
ProcessorType
Char(24)
NULL,
ProcessorSpeed
Numeric(3,2)
NOT NULL,
MainMemory
Char(15)
NOT NULL,
DiskSize
Char(15)
NOT NULL,
CONSTRAINT
COMPUTER_PK
PRIMARY KEY(SerialNumber),
CONSTRAINT
MAKE_CHECK
CHECK
(Make IN ('Dell', 'Gateway', 'HP', 'Other')),
CONSTRAINT
SPEED_CHECK
CHECK
(ProcessorSpeed BETWEEN 1.0 AND 4.0)
);
B.
The data for the COMPUTER table are in Figure 3-23. Use Access SQL to enter these data into
your COMPUTER table.
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Chapter Three – Structured Query Language
INSERT INTO COMPUTER VALUES(
9871234, 'HP', 'Pavilion 500-210qe', 'Intel i5-4530', 3.00,
'6.0 GBytes', '1.0 TBytes');
INSERT INTO COMPUTER VALUES(
9871245, 'HP', 'Pavilion 500-210qe', 'Intel i5-4530', 3.00,
'6.0 GBytes', '1.0 TBytes');
INSERT INTO COMPUTER VALUES(
9871256, 'HP', 'Pavilion 500-210qe', 'Intel i5-4530', 3.00,
'6.0 GBytes', '1.0 TBytes');
INSERT INTO COMPUTER VALUES(
9871267, 'HP', 'Pavilion 500-210qe', 'Intel i5-4530', 3.00,
'6.0 GBytes', '1.0 TBytes');
INSERT INTO COMPUTER VALUES(
9871278, 'HP', 'Pavilion 500-210qe', 'Intel i5-4530', 3.00,
'6.0 GBytes', '1.0 TBytes');
INSERT INTO COMPUTER VALUES(
9871289, 'HP', 'Pavilion 500-210qe', 'Intel i5-4530', 3.00,
'6.0 GBytes', '1.0 TBytes');
INSERT INTO COMPUTER VALUES(
6541001, 'Dell', 'OptiPlex 9020', 'Intel i7-4770', 3.40,
'8.0 GBytes', '1.0 TBytes');
INSERT INTO COMPUTER VALUES(
6541002, 'Dell', 'OptiPlex 9020', 'Intel i7-4770', 3.40,
'8.0 GBytes', '1.0 TBytes');
INSERT INTO COMPUTER VALUES(
6541003, 'Dell', 'OptiPlex 9020', 'Intel i7-4770', 3.40,
'8.0 GBytes', '1.0 TBytes');
INSERT INTO COMPUTER VALUES(
6541004, 'Dell', 'OptiPlex 9020', 'Intel i7-4770', 3.40,
'8.0 GBytes', '1.0 TBytes');
INSERT INTO COMPUTER VALUES(
6541005, 'Dell', 'OptiPlex 9020', 'Intel i7-4770', 3.40,
'8.0 GBytes', '1.0 TBytes');
INSERT INTO COMPUTER VALUES(
6541006, 'Dell', 'OptiPlex 9020', 'Intel i7-4770', 3.40,
'8.0 GBytes', '1.0 TBytes');
SELECT
FROM
ORDER BY
*
COMPUTER
Make DESC, SerialNumber ASC;
Page 10
Chapter Three – Structured Query Language
C.
Figure 3-24 shows the column characteristics for WPC COMPUTER_ASSIGNMENT table. Using
the column characteristics, use Access SQL to create the COMPUTER_ASSIGNMENT table and
the associated constraints in the WPC.accdb database. Are there any table or relationship
settings or characteristics that cannot be created in SQL? If so, what are they? Use the Access
GUI to finish setting table characteristics and relationship settings if necessary.
CREATE
TABLE COMPUTER_ASSIGNMENT(
SerialNumber
Int
NOT NULL,
EmployeeNumber
Int
NOT NULL,
DateAssigned
Date
NOT NULL,
DateReassigned
Date
NULL,
CONSTRAINT
COMP_ASSIGN_PK
PRIMARY KEY(SerialNumber, DateAssigned),
CONSTRAINT
COMP_ASSIGN_EMPLOYEE FOREIGN KEY(EmployeeNumber)
REFERENCES EMPLOYEE(EmployeeNumber)
ON UPDATE NO ACTION
ON DELETE NO ACTION,
CONSTRAINT
COMP_ASSIGN_COMPUTER FOREIGN KEY(SerialNumber)
REFERENCES COMPUTER(SerialNumber)
ON UPDATE NO ACTION
ON DELETE CASCADE
);
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Chapter Three – Structured Query Language
D.
The data for the COMPUTER_ASSIGNMENT table are in Figure 3-26. Use Access SQL to enter
these data into your COMPUTER_ASSIGNMENT table.
INSERT INTO COMPUTER_ASSIGNMENT VALUES(
9871234, 11, '15-Sep-14', '21-Oct-14');
INSERT INTO COMPUTER_ASSIGNMENT
VALUES(
9871245, 12, '15-Sep-14', '21-Oct-14');
INSERT INTO COMPUTER_ASSIGNMENT (SerialNumber, EmployeeNumber,
VALUES(9871256, 4, '15-Sep-14');
INSERT INTO COMPUTER_ASSIGNMENT (SerialNumber, EmployeeNumber,
VALUES(9871267, 5, '15-Sep-14');
INSERT INTO COMPUTER_ASSIGNMENT (SerialNumber, EmployeeNumber,
VALUES(9871278, 8, '15-Sep-14');
INSERT INTO COMPUTER_ASSIGNMENT (SerialNumber, EmployeeNumber,
VALUES(9871289, 9, '15-Sep-14');
INSERT INTO COMPUTER_ASSIGNMENT (SerialNumber, EmployeeNumber,
VALUES(6541001, 11, '21-Oct-14');
INSERT INTO COMPUTER_ASSIGNMENT (SerialNumber, EmployeeNumber,
VALUES(6541002, 12, '21-Oct-14');
INSERT INTO COMPUTER_ASSIGNMENT (SerialNumber, EmployeeNumber,
VALUES(6541003, 1, '21-Oct-14');
INSERT INTO COMPUTER_ASSIGNMENT (SerialNumber, EmployeeNumber,
VALUES(6541004, 2, '21-Oct-14');
INSERT INTO COMPUTER_ASSIGNMENT (SerialNumber, EmployeeNumber,
VALUES(6541005, 3, '21-Oct-14');
INSERT INTO COMPUTER_ASSIGNMENT (SerialNumber, EmployeeNumber,
VALUES(6541006, 6, '21-Oct-14');
INSERT INTO COMPUTER_ASSIGNMENT (SerialNumber, EmployeeNumber,
VALUES(9871234, 7, '05-Nov-14');
INSERT INTO COMPUTER_ASSIGNMENT (SerialNumber, EmployeeNumber,
VALUES(9871245, 10, '05-Nov-14');
Page 12
DateAssigned)
DateAssigned)
DateAssigned)
DateAssigned)
DateAssigned)
DateAssigned)
DateAssigned)
DateAssigned)
DateAssigned)
DateAssigned)
DateAssigned)
DateAssigned)
Chapter Three – Structured Query Language
SELECT
FROM
ORDER BY
E.
*
COMPUTER_ASSIGNMENT
DateAssigned ASC, SerialNumber ASC;
Who is currently using which computer at WPC? Create an appropriate SQL query to answer this
question. Show SerialNumber, Make, and Model. Show EmployeeID, LastName, FirstName,
Department, and Employee Phone. Sort first by Department and then by employee LastName.
Save this query using the query naming rules in exercise AW.3.1.
/*****
SELECT
FROM
WHERE
ORDER BY
Question E – SQL-Query-AWE-3-3-E.sql
************************/
C.SerialNumber, Make, Model,
ProcessorType, ProcessorSpeed,
E.EmployeeNumber, LastName, FirstName, Department, Phone
COMPUTER AS C JOIN COMPUTER_ASSIGNMENT AS CA
ON C.SerialNumber=CA.SerialNumber
JOIN EMPLOYEE AS E
ON CA.EmployeeNumber=E. EmployeeNumber
DateReassigned IS NULL
Department, LastName, DateAssigned;
Page 13