Modern Database Management
13th Edition
ISBN: 9780134773650
Author: Hoffer
Publisher: PEARSON
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Chapter 8, Problem 8.59PAE
Program Plan Intro
Position in the given figure where the records of Sooners and Flashes will be stored and action done in case a new record is to be added and the leaves is full.
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Why adopting a normalised Index metadata relation could result in worse performance is explained.
Give a normalized version of the Index_metadata relation, and explain why using the normalized version would result in worse performance.
Why may using a normalized version of the Index metadata relation lead to lower performance, and what causes this?
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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- The reasons why using a normalised version of the Index metadata relation could result in poor performance are discussed in this article.arrow_forwardWhich relational constraints would be violated if the following operation were applied to the COMPANY database snapshot illustrated bellow?Insert:2. Insert < 'Jasmine', 'Rani', 321, 3/9/1982, 3000, NULL, 30> into EMPLOYEE.3. Insert < 'Jasmine', 'Rani', 923, 3/19/1980, '3000JD', NULL, 30> into EMPLOYEE.4. Insert <123456, 'Rani', 321, 3/9/1985, '3000$', 432, 10> into EMPLOYEE.5. Insert <400,'Planning'> into DEPARTMENT.6. Insert <123456, 'Rani', 123, 3/9/1985, '3500JD', 432, 10> into EMPLOYEE.7. Insert <30,'Planning'> into DEPARTMENT.8. Insert < 'Jasmine', 'Rani',NULL, 30/9/1977, '4000JD', 587, 10> into EMPLOYEE.9. Insert <NULL,'Planning'> into DEPARTMENT.10. Insert < 'Jasmine', 'Rani',222, 3/2/1980, 3000, 587, 50> into EMPLOYEE .11. Insert < 'Alice', 'Rani',222, 30/2/1976, 3000, 687, 10> into EMPLOYEE.12. Insert < 'Jasmine', 'Rani',NULL, 3/22/1976, '1000JD', 587, 50> into EMPLOYEE.13. Insert < 'Sali', 'Rani', 'NULL',…arrow_forwardHow does the concept of "Database Normalization" help in avoiding update anomalies?arrow_forward
- Suppose each of the following update operations is applied directly to the below database state.Discuss which integrity constraints were violated by each operation and how you can enforce theseconstraints to ensure no violation occurs. If an operation does not violate any constraints, brieflyexplain why. d) Update dno of John B Smith to 3 in Employee table.e) Delete the employee Franklin T Wong from the Employee table.f) Delete the third record from works_on tableg) update pnumber of productX to 20 in project tablearrow_forwardShow how primary keys may be used to avoid key ripple effects from arising as the size of a database expands.arrow_forwardConsider the follow relations’ schemas to answer the following questions: Student (sid, name, level, address) Book(bid, title, author) BorrowedBook(sid, bid, date) 1) Assume that, there are 10,000 Student records stored on 1,000 pages/blocks, 50,000 Book records stored on 5,000 pages, 300,000 BorrowedBook records stored on 15,000 pages, and there are 500 different authors. Find out what is the record size for each of the previous relation?, and what is the blocking factor for each relation?arrow_forward
- Provide an example of how primary keys may be utilized to prevent key ripple effects from occurring as a database expands.arrow_forwardSuppose you wish to create an audit trail of changes to the takes relation. Can the preceding implementation guarantee that updates made by a malicious database administrator (or someone who manages to get the administrator’s password) will be in the audit trail? Explain your answer.arrow_forwardPart a) What is meant by the term Consistency as it relates to databases records? Part b) Give an example (real or imagined) in which a Big Data read may prove to be inconsistent.arrow_forward
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