Modern Database Management
13th Edition
ISBN: 9780134792293
Author: Hoffer
Publisher: PEARSON
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Textbook Question
Chapter 8, Problem 8.52PAE
Consider the relations in Problem and Exercise 8-51. Identify possible opportunities for denormalizing these relations as part of the physical design of the
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Assignment Brief:
Some of the most difficult decisions that you face as a database developer are what tables to
create and what columns to place in each table, as well as how to relate the tables that you
create. Normalization is the process of applying a series of rules to ensure that your database
achieves optimal structure. Normal forms are a progression of these rules. Each successive
normal form achieves a better database design than the previous form did. Based on your
understanding for the various normal form respond to the following problems and provide the
optimal answer/solution.
Problem#1: 1st Normal Form (1NF)
Consider the Students table, with the primary key underlined, and the following data:
Students:
Alpha
100111
Email
doe@usna.edu
Name
Courses
GradePoints
NN204, SI204,
IT221
SM223, EE301
SI204
John Doe
2,3,3
Matt Smith
092244
113221
smith@usna.edu
black@usna.edu
4,4
Melinda
3
Black
NN204, SI204,
IT221
090112
Tom Johnson
Johnson@usna.ed
4,2,3
u
a) Is the Students table…
Explain the concept of database normalization. What are the different normal forms, and why is normalization important in database design?
Question 2
UNISHOP is a company that manages equipment products,
invoices from their respective vendors and sales representatives
(SalesRep). UNISHOP vendors have been complaining about poor
management of their product handling in the current manual
system. As a result, the top management has decided that
information related to the vendors should be organized using a
DBMS. You have been hired to design the database. Draw an
Entity Relationship Diagram (ERD) to represent the database based
on the requirements given below:
· An Invoice is used to keep track of the Product manage by
SalesRep.
customerName, customerAddress and customercity. The
invoice is uniquely identified by its unique invoiceld. The
invoice is written by only one salesrep but a salesrep may
write zero or many invoices
· SalesRep stores information about SalesRepID, SalesRepName
and SalesRep Tel.
· SalesRep manages the products. The Products store information
such as ProductId, Productname, ProductInfo, SalesReplD and…
Chapter 8 Solutions
Modern Database Management
Ch. 8 - Prob. 8.1RQCh. 8 - Prob. 8.2RQCh. 8 - Prob. 8.3RQCh. 8 - Prob. 8.4RQCh. 8 - Prob. 8.5RQCh. 8 - Prob. 8.6RQCh. 8 - Prob. 8.7RQCh. 8 - Prob. 8.8RQCh. 8 - Explain why you sometimes have to reserve much...Ch. 8 - Why are field values sometimes coded?
Ch. 8 - Prob. 8.11RQCh. 8 - Prob. 8.12RQCh. 8 - Explain why normalized relations may not comprise...Ch. 8 - Prob. 8.14RQCh. 8 - List three common situations that suggest that...Ch. 8 - Explain the reasons why some experts are against...Ch. 8 - Prob. 8.17RQCh. 8 - Prob. 8.18RQCh. 8 - Prob. 8.19RQCh. 8 - Prob. 8.20RQCh. 8 - Prob. 8.21RQCh. 8 - Prob. 8.22RQCh. 8 - One of the strongest recommendations regarding...Ch. 8 - Explain why an index is useful only if there is...Ch. 8 - Indexing can clearly be very beneficial. Why...Ch. 8 - Prob. 8.26RQCh. 8 - Prob. 8.27RQCh. 8 - Describe the role of data dictionary in the...Ch. 8 - Prob. 8.29RQCh. 8 - Prob. 8.30RQCh. 8 - Explain how creating a view may increase data...Ch. 8 - Prob. 8.32RQCh. 8 - Prob. 8.33RQCh. 8 - Prob. 8.34RQCh. 8 - Prob. 8.35RQCh. 8 - Prob. 8.36RQCh. 8 - Prob. 8.37RQCh. 8 - Prob. 8.38RQCh. 8 - Prob. 8.39RQCh. 8 - How can views be used as part of data security?...Ch. 8 - Prob. 8.41RQCh. 8 - Prob. 8.42RQCh. 8 - Consider the following two relations for...Ch. 8 - Prob. 8.44PAECh. 8 - Prob. 8.45PAECh. 8 - Prob. 8.46PAECh. 8 - Prob. 8.47PAECh. 8 - Suppose you are designing a default value for the...Ch. 8 - When a student has not chosen a major at a...Ch. 8 - Prob. 8.50PAECh. 8 - Prob. 8.51PAECh. 8 - Consider the relations in Problem and Exercise...Ch. 8 - Prob. 8.53PAECh. 8 - Prob. 8.54PAECh. 8 - Prob. 8.55PAECh. 8 - Prob. 8.56PAECh. 8 - Prob. 8.57PAECh. 8 - Consider the relations specified in Problem and...Ch. 8 - Prob. 8.59PAECh. 8 - Prob. 8.60PAECh. 8 - Prob. 8.61PAECh. 8 - Prob. 8.62PAECh. 8 - Prob. 8.63PAECh. 8 - Prob. 8.64PAECh. 8 - Problems and Exercises 8-65 through 8-68 refer to...Ch. 8 - Prob. 8.66PAECh. 8 - Problems and Exercises 8-65i5 through 8-68 refer...Ch. 8 - Refer to Figure 4-5 0. For each of the following...Ch. 8 - Prob. 8.69PAECh. 8 - Prob. 8.70PAECh. 8 - Prob. 8.71PAECh. 8 - Prob. 8.72PAECh. 8 - Prob. 8.73PAECh. 8 - Prob. 8.74PAECh. 8 - Prob. 8.75PAECh. 8 - Prob. 8.76PAECh. 8 - Prob. 8.77PAE
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.Similar questions
- Take a few minutes to examine the sample completed survey. Based on your understanding of the sample data in this file, design a database through the following process: 1- What is your database design solution in the third normal form? How does your solution meet the requirements of third normal form? Support your third normal form design with your assumptions and your understanding of the given sample data.arrow_forwardIt is essential to discuss the various database table possibilities when dealing with subtype associations.Decide on a format, and then talk on the issues that should be addressed in it.arrow_forwardExplain the concept of database constraints, including primary key, foreign key, unique, and check constraints. How do constraints ensure data quality and consistency?arrow_forward
- The following exercises are based on the BITS database user views as designed in Your Turn 6-1 in this chapter. In each exercise, represent your answer in DBDL and with an Entity Relationship Diagram. 5. Indicate the changes you need to make to the BITS database design to support the following situation. The client address may or may not be the same as the Bill To address on the client's invoice.arrow_forwardQuestion a. Normalization is an important concept for database professionals. Whether you are the designer, database analyst or administrator, it is useful for designing, situation verification as well as performance tuning. In your opinion discuss the basic issues to be aware of before carrying out the normalization process. b. Given the following relational schema and its functional dependencies: Rentallnfo custNo propertyNo custName pAddress rentStart ownerNo OName fd1 fd2 fd3 fd4 fd5 Specify candidate keys and state the primary key. Assuming that the relation is in first normal form (1NF), describe and illustrate the process of normalizing the relational schema to second (2NF) and third (3NF) normal forms. Identify the primary and foreign keys in your third normal forms. ii.arrow_forwardBased on BITS database user views as designed in Your Turn 6-1 in this chapter. In each exercise, represent your answer in DBDL and with an Entity Relationship Diagram. 2. Indicate the changes you need to make to the design of the BITS database to support the following situation. There is no relationship between clients and consultants. When a client places an order (service request), it may be performed by any consultant. On the order, identify both the client placing the order and the consultant responsible for the order.arrow_forward
- While dealing with subtype associations, it is essential to have a conversation about the many different possibilities for database tables that are accessible.Choose the format that you want to utilize, and then debate the issues that are relevant to the layout that you chose.arrow_forwardExplain the statement, Some physical database design techniques change the logical design, and some do not. Can you please help without plegerism please?arrow_forwardTasks: Considering the following E-R diagram, you need to translate it into a relational database and add some data to the tables. a) Write SQL statements to create the corresponding relations and capture as many of the participation and cardinality constraints as possible. Make sure that the data type and size for each attribute are appropriate. b) If some constraints in the diagram cannot be captured, explain why. c) Write SQL statements to insert at least two tuples for each table task name number ssn phone administrators O deptName dob Employees Caddresses salary staff's hourlySalary number M name Places N Orders M Contains N Items description P status number ID expShipDate qty deliveryDate name qtyInStock CunitCost actualShipDate salePrice email Street Customers city Addres statearrow_forward
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