Fall 2005
Tsai
Section:___________
Name:______________
MIS 150 - Database Management Systems for Business
Exam 3
Part II: open books and notes
13.
(12 points) School of Business Administration (SBA) hires faculty
members to teach classes and staff members to perform the
administration work. A faculty member can be an administrator at the
same time. SBA offers different types of majors for students to get their
degrees. Develop an Enhanced Entity-Relationship diagram to document
the database of MIS. (Minus 1 point for each mistake.)
14.
Given the following 6 relations:
customer (custid, custname, soucialsecurityno, address, country)
salesperson (salpersid, salpersname, dob, soucialsecurityno)
product (prodid, manufactrid, prodname, cost, salesprice)
sales (salesid, date, custid, salpersid, saleamount)
salesitem (salesid, prodid, manufactrid, qty)
manufacturer (manufactrid, manufactrname, address, country)
(a)
(10 points) Use SQL statements to find the average sales amount for
each salesperson in September 2005. The report should have
salesperson name, salesperson number and average sales amount.
Select salpersname, salpersid, avg(saleamount)
From salesperson p, sales s
Where p. salpersid=s. salpersid
Group by (salpersname, salpersid);
(b)
(10 points) Use SQL statements to list the salesperson name that did not
make any sale in September 2005.
Select salpersname
From salesperson
Where salpersid not in
(Select salpersid
From sales
Where date between 9/1/05 and 9/30/05);
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15.
(24points) For each of the following relations with no repeating group,
indicate (1) every determinant and the most appropriate primary key for
the relation; and (2) the highest normal form that has been violated by the
relation. (Minus 2 points for each wrong answer.)
a.
CLASS (COURSE NO., ROOM, SECTION NO. CAPACITY)
assumption: ROOM and COURSE NO+ SECTION NO are unique.
determinant(s): ROOM; COURSE NO+ SECTION NO
primary key: COURSE NO+ SECTION NO
lowest normal form violation: 3rd
b.
PROJ (PROJECT ID, EMPLOYEE ID, EMPLOYEE ADDRESS, TOTAL
HOURS, TASK ID)
Assumptions: many-to-many relationship between PROJECT ID and
EMPLOYEE ID, and many-to-many relationship between PROJECT ID
and TASK ID.
determinant(s): EMPLOYEE ID; PROJECT ID+EMPLOYEE ID+TASK ID
primary key: PROJECT ID+EMPLOYEE ID+TASK ID
lowest normal form violation: 2nd
c.
PROJECT (PROJECT ID, EMPLOYEE SALARY, EMPLOYEE ID)
Assumption: many-to-many relationship between PROJECT ID AND
EMPLOYEE ID
determinant(s): EMPLOYEE ID
primary key: PROJECT ID+EMPLOYEE ID
lowest normal form violation: 2nd
d.
PART_SUPPLIER (PART NO., PART DESCRIPTION, VENDOR ID,
VENDOR NAME, VENDOR ADDRESS, UNIT COST)
Assumption: many-to-many relationship between PART NO and VENDOR
ID.
determinant(s): PART NO.; VENDOR ID;
primary key: PART NO+VENDOR ID
lowest normal form violation: 2nd
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16.
(24 points) Normalize each of the following relations to the fifth normal
form. Indicate primary key using single underline, and foreign key using
double underlines for the final relations.
b.
CLASS (COURSE NO., ROOM, SECTION NO. CAPACITY)
assumption: ROOM and COURSE NO+ SECTION NO are unique.
C1 (COURSE NO., ROOM, SECTION NO.)
C2 (ROOM, CAPACITY)
b.
PROJ (PROJECT ID, EMPLOYEE ID, EMPLOYEE ADDRESS, TOTAL
HOURS, TASK ID)
Assumptions: many-to-many relationship between PROJECT ID and
EMPLOYEE ID, and many-to-many relationship between PROJECT ID
and TASK ID.
P1 (EMPLOYEE ID, EMPLOYEE ADDRESS)
P2 (PROJECT ID, EMPLOYEE ID, TOTAL HOURS, TASK ID)
c.
PROJECT (PROJECT ID, EMPLOYEE SALARY, EMPLOYEE ID)
Assumption: many-to-many relationship between PROJECT ID AND
EMPLOYEE ID
P1 (EMPLOYEE SALARY, EMPLOYEE ID)
P2 (PROJECT ID, EMPLOYEE ID)
d.
PART_SUPPLIER (PART NO., PART DESCRIPTION, VENDOR ID,
VENDOR NAME, VENDOR ADDRESS, UNIT COST)
Assumption: many-to-many relationship between PART NO and VENDOR
ID.
PART_SUPPLIER1 (PART NO., PART DESCRIPTION)
PART_SUPPLIER2 (VENDOR ID, VENDOR NAME, VENDOR
ADDRESS)
PART_SUPPLIER (PART NO., VENDOR ID, UNIT COST)
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