Pearson eText for Modern Database Management -- Instant Access (Pearson+)
13th Edition
ISBN: 9780137305940
Author: Jeffrey Hoffer, Ramesh Venkataraman
Publisher: PEARSON+
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Chapter 8, Problem 8.12RQ
Program Plan Intro
The three ways to handle missing field values.
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Chapter 8 Solutions
Pearson eText for Modern Database Management -- Instant Access (Pearson+)
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 factors influence which index method is used?arrow_forwardIn anticipation of a change to the database, you are asked to provide a list of all products that have 'Man-Made' or 'Man Made' in the the composition text. (HInt: It is easiest to use LIKE in this instance.) In addition, you are requested to replace either 'Man-Made' or 'Man Made' with the word 'Synthetic'. Only include ProductIDs between 1050 and 1060. Show the following in your answer: ProductID, ProductName, Composition, and the modified composition field as 'NewComposition'. (HINT: This problem is a little tricky because you need to replace both 'Man-Made' and 'Man Made'. The way to do this is to use a replace within a replace.)arrow_forwardExplain why you sometimes have to reserve much more space for a numeric field than any of the initial stored values require.arrow_forward
- Please describe the Index metadata relationship in its normalized form, as well as the reasons why using the normalized version can result in worse performance?arrow_forwardDescribe the Index metadata connection in normalized form, as well as the reasons why utilizing the normalized version might result in lower performance??arrow_forwardExplain why you sometimes need to set aside significantly more space for a numeric field than any of the initial stored values require.arrow_forward
- Design a survey form of your own. Fill it out as it might have been completed during the database design for Henry Books. For any questions you have too little information to answer, make a reasonable guess. (Ray Henry, the owner of a bookstore chain named Henry Books, gathers and organizes information about branches, publishers, authors, and books. Each local branch of the bookstore has a number that uniquely identifies the branch. In addition, Ray tracks the branch’s name, location, and number of employees. Each publisher has a code that uniquely identifies the publisher. In addition, Ray tracks the publisher’s name and city. The only user of the Book database is Ray, but you do not want to treat the entire project as a single user view. Ray has provided you with all the reports the system must produce, and you will treat each report as a user view. Ray has given you the following requirements: User View 1 Requirements: For each publisher, list the publisher code, publisher name, and…arrow_forwardThe particular indexing technique used is chosen by a variety of distinct parameters.arrow_forwardCreate a dataset that contains 3 objects and 4 attributes by filling the following table. Type of attribute Attribute 1 (Nominal Attribute 2 (Ordinal) Attribute 3 (Interval) Attribute 4 (Ratio) AttributeName Object 1 Object 2 Object 3arrow_forward
- When you say "metadata," what do you mean exactly? In the setting of a dataset, we can say the following about metadata: When might it be helpful to use information pulled from a set of results?arrow_forwardIn the Testa EV database design described in the previous question, please complete a field specifications form for the field 'Model_Cost' of the table 'Model_T'. The field records the cost of producing a specific EV model. Because its data come from the cost data of specific parts used to build the model, its value can be entered later and editing is allowed (null is allowed). The field value is required. Only decimal numeric data are supported for the entered value. The field can store a maximum of 10 digits (including 2 decimal places). The user of the database (data analyst) is responsible for entering and maintaining the data. No specific range of values is specified for this field. You should enter 'N/A' (or leave it unchecked) for elements that are not applicable.arrow_forwardSuppose the date treatment performed was not entered. What procedures are required to handle the missing data?arrow_forward
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