Modern Database Management
13th Edition
ISBN: 9780134773650
Author: Hoffer
Publisher: PEARSON
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Chapter 8, Problem 8.50PAE
Program Plan Intro
Identification of the denormalization opportunities for the given relations as a part of physical design of
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Consider the following normalized relations from a database in a large retail chain
What opportunities might exist for denormalizing these relations when defining the physical records for this database? Under what circumstances would you consider creating such denormalized records?
You receive the following requirements for a caterer's database:
For a customer, store a customer ID, last name, first name, billing address, and phone number
For an order, store an order number, order date, event date, customer ID, description of services, and total price for services
When designing this database, which step do you take first?
a.
Identify the customer ID and order number as unique identifiers.
b.
Identify and name the entities CUSTOMER and ORDER
c.
Identify customer ID, last name, first name, billing address, and phone number as attributes
d.
Create a CUSTOMER table that includes all the customers' attributes as columns
Indicate the changes you need to make to the BITS database design to support the following situation.
The region where clients are located is divided into territories. For each territory, store the territory number (a unique identifier) and territory name. Each consultant is assigned to a single territory. Each client also is assigned to a single territory, but the territory must be the same as the territory to which the client’s consultant is assigned.
Could you also please make a diagram that shows me the type of relation between tables? for example, if it lines of the connectiones finishes with a dot or something like that.
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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- What type of relationship can’t be stored in a relational database? Why?arrow_forwardIn the hierarchy of data, what is the difference between a data attribute and a data item? What is the domain of an attribute?arrow_forwardQuestion 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…arrow_forward
- Please send me answer of this question immediately and i will give you like sure sirarrow_forwardThe 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_forwardYour job as a database designer is to design a database with a schema that captures all the information that galleries need to maintain. Galleries keep information about artists, their names (which are unique), birthplaces, age, and style of art. For each piece of artwork, the artist, the year it was made, its unique title, its type of art (e.g., painting, photograph, sculpture), and its price must be stored. Pieces of artwork also classified into groups of various kinds, for example, portraits, still lives, works by Picasso, or works of the 19th century; a given piece may belong to more than one group. Each group is identified by a name (like those just given) that describes the group and property. Finally, galleries keep information about customers. For each customer, galleries keep that person’s unique ID, name, address, total amount of dollars spent in the gallery, and the artists and groups of art that the customer tends to like. Draw the ER diagram for the database.arrow_forward
- The following tables describe the content of a relational database:arrow_forwardBelow given relations of a database are in First Normal Form (1st NF). Decompose (Split) the relations to Normalize in 2NF and 3NF. tbl Project Project Code Project Name Project Manager Budget Reservation System HR System Attendance System PC010 Mr. Said 25000 PC011 MS. Malak 32000 PC012 Mr. Rajesh 19000 DBMS tbl Emp Dept Project Code Emp No Hourly Pay Emp Name Dept No Dept Name Ali Mohd. PC010 S100 D03 Database 7.500 PC010 S101 Hamood D02 Testing 5.500 PC010 S102 Riyaz D01 IT 8.200 PC011 S103 Pavan D03 Database 6.500 PC011 S104 Basma D02 Testing 5.400 PC011 S115 Asaad D01 IT 7.900 PC012 S137 Fathima D03 Database 6.200 PC012 S218 Avinash D02 Testing 6.100 PC012 S109 Роoja D01 IT 9.300arrow_forwardQuestion 4, Page 281 Concepts of Database Management, 9th Edition ISBN: 978-1-337-09342-2 The solution found for this question doesn't take into account some of my concerns. Of note, the relationships aren't identified between the client and reservation tables. Additionally, groups may have names or other attributes that need to be captured. Question: Does the solution presented actually produce a workable solution that will indeed satisfy all the needs of the customer by simply adding the one field into the client table as suggested? And if not, what would you recommend?arrow_forward
- Explain the concept of normalization in database design. What are the benefits of a normalized database?arrow_forwardWrite about the three circumstances that call for denormalization of relations prior to the deployment of a database.arrow_forwardBITS Corporation Exercises 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 a diagram. You may use any of the styles presented in this chapter for the diagram. 1. Indicate the changes you need to make to the design of the BITS database to support the following situation. A client is not necessarily represented by a single consultant but can be represented by several consultants. 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. 3. Indicate the changes you need to make to the BITS database design to support the following situation. The region where clients are…arrow_forward
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