DB211 – Database Design ()
Instructor:
Unit 8, Assignment A
Student:
Assignment Instructions:
Solve Chapter 6 Problems 1-3 / Page 214-216 (15 points) and Problem 11 / Page 221 (25 points).
Submit your assignment file using the link above (due Sunday of this unit, 40 points)
PROBLEMS
1. Using the descriptions of the attributes given in the figure, convert the ERD shown in Figure P6.1 into a
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dependency diagram that is in at least 3NF.
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FIGURE P6.1: Appointment ERD for Problem 1
SOURCE: Course Technology/Cengage Learning
DOCTOR (Doc_EmpID, Doc_Fname, Doc_Lname, Doc_CellPhone)
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APPOINTMENT (App_Num, Doc_EmpID, Pat_ID, App_Date, App_Time, App_Status)
PATIENT (Pat_ID, Pat_Lname, Pat_Fname, Pat_Phone, Pat_Street, Pat_City, Pat_State, Pat_Zip)
2. Using the descriptions of the attributes given in the figure, convert the ERD shown in Figure P6.2 into a
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dependency diagram that is in at least 3NF.
FIGURE P6.2: Presentation ERD for Problem 2
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SOURCE: Course Technology/Cengage Learning
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PRESENTATION (Pres_SessionNum, Pres_Order, Pres_AuthorID, Pres_Room)
PRESENTER (Pres_AuthorID, Pres_LName, Pres_FName)
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REGISTRATION (Pres_SessionNum, Pres_Order, Att_Num, Reg_Date)
ATTENDEE (Att_Num, Att_LName, Att_FName, Att_Status)
3. Using the INVOICE table structure shown in Table P6.3, do the following:
a. Write the relational schema, draw its dependency diagram, and identify all dependencies, including
all partial and transitive dependencies. You can assume that the table does not contain repeating
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groups and that an invoice number references more than one product. (Hint: This table uses a
composite primary key.)
INVOICE (INV_NUM, PROD_NUM, SALE_DATE, PROD_LABEL,
VEND_CODE, VEND_NAME, QUANT_SOLD, PROD_PRICE)
b. Remove all partial dependencies, write the relational schema, and draw the new dependency
diagrams. Identify the normal forms for each table structure you created.
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NOTE
You can assume that any given product is supplied by a single vendor, but a vendor can supply
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many products. Therefore, it is proper to conclude that the following dependency exists:
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PROD_NUM → PROD_LABEL, PROD_PRICE, VEND_CODE,
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VEND_NAME(Hint: Your actions should produce three dependency diagrams.)
INVOICE (INV_NUM, PROD_NUM, QUANT_SOLD)
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PRODUCT (PROD_NUM, PROD_LABEL, PROD_PRICE, VEND_CODE, VEND_NAME)
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SALE (INV_NUM, SALE_DATE)
c. Remove all transitive dependencies, write the relational schema, and draw the new dependency
diagrams. Also identify the normal forms for each table structure you created.
INVOICE (INV_NUM, PROD_NUM, QUANT_SOLD)
SALE (INV_NUM, SALE_DATE)
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PRODUCT (PROD_NUM, PROD_LABEL, PROD_PRICE, VEND_CODE)
VENDOR (VEND_CODE, VEND_NAME)
d. Draw the Crow’s Foot ERD.
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SAMPLE
VALUE
SAMPLE
VALUE
SAMPLE
VALUE
SAMPLE
VALUE
SAMPLE
VALUE
INV_NUM
211347
211347
211347
211348
211349
PROD_NUM
AA-E3422QW
QD-300932X
RU-995748G
AA-E3422QW
GH-778345P
SALE_DATE
15-Jan-2012
15-Jan-2012
15-Jan-2012
15-Jan-2012
16-Jan-2012
0.25-in. drill bit Band saw
Rotary sander
Power drill
Rotary sander
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PROD_LABEL
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TABLE P6.3
ATTRIBUTE
NAME
211
211
309
211
157
VEND_NAME
NeverFail, Inc.
NeverFail, Inc.
BeGood, Inc.
NeverFail, Inc.
ToughGo, Inc.
QUANT_SOLD
1
8
1
2
1
$49.95
$3.45
$39.99
$49.95
$87.75
PROD_PRICE
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VEND_CODE
11. Given the sample records in the CHARTER table shown in Table P6.11, do the following:
a. Write the relational schema and draw the dependency diagram for the table structure. Make sure that
you label all dependencies. CHAR_PAX indicates the number of passengers carried. The
CHAR_MILES entry is based on round-trip miles, including pickup points. (Hint: Look at the data
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values to determine the nature of the relationships. For example, note that employee Melton has
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flown two charter trips as pilot and one trip as copilot.)
CHARTER (CHAR_TRIP, CHAR_DATE, CHAR_CITY, CHAR_MILES, CUST_NUM,
CUST_LNAME, CHAR_PAX, CHAR_CARGO, PILOT, COPILOT, FLT_ENGINEER,
LOAD_MASTER, AC_NUMBER, MODEL_CODE, MODEL_SEATS, MODEL_CHG_MILE)
b. Decompose the dependency diagram you drew to solve Problem 11a to create table structures that
are in 3NF and write the relational schema.
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CHARTER (CHAR_TRIP, CHAR_DATE, CHAR_CITY, CHAR_MILES, CUST_NUM,
CHAR_PAX, CHAR_CARGO, PILOT, COPILOT, FLT_ENGINEER, LOAD_MASTER,
AC_NUMBER)
CUSTOMER (CUST_NUM, CUST_LNAME)
AIRCRAFT (AC_NUMBER, MOD_CODE)
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MODEL (MOD_CODE, MOD_SEATS, MOD_CHG_MILE)
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c. Draw the Crow’s Foot ERD to reflect the properly decomposed dependency diagrams you created
in Problem 11b. Make sure the ERD yields a database that can track all of the data shown in Problem
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11. Show all entities, relationships, connectivities, optionalities, and cardinalities.
TABLE P6.11
ATTRIBUTE NAME
10232
10233
10234
10235
15-Jan-2012
15-Jan-2012
16-Jan-2012
17-Jan-2012
CHAR_CITY
STL
MIA
TYS
ATL
CHAR_MILES
580
1,290
524
768
CUST_NUM
784
231
544
784
CUST_LNAME
Brown
Hanson
Bryana
Brown
CHAR_PAX
5
12
2
5
CHAR_DATE
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CHAR_TRIP
SAMPLE VALUE SAMPLE VALUE SAMPLE VALUE SAMPLE VALUE
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ATTRIBUTE NAME
SAMPLE VALUE SAMPLE VALUE SAMPLE VALUE SAMPLE VALUE
CHAR_CARGO
235 lbs.
18,940 lbs.
348 lbs.
155 lbs.
PILOT
Melton
Chen
Henderson
Melton
COPILOT
Henderson
Melton
FLT_ENGINEER
O’Shaski
LOAD_MASTER
Benkasi
1234Q
3456Y
1234Q
2256W
MODEL_CODE
PA31-350
CV-580
PA31-350
PA31-350
MODEL_SEATS
10
38
10
10
MODEL_CHG_MILE
$2.79
$23.36
$2.79
$2.79
Assignment Details:
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AC_NUMBER
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SEE RED TEXT ABOVE
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