Modern Database Management (12th Edition)
12th Edition
ISBN: 9780133544619
Author: Jeffrey A. Hoffer, Ramesh Venkataraman, Heikki Topi
Publisher: PEARSON
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Chapter 5, Problem 5.13RQ
Explain why normalized relations may not comprise an efficient physical implementation structure.
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Why is it that normalized relations do not jeopardize the efficiency of a physical implementation structure?
What is the reason that normalized relations may not compromise an efficient physical implementation structure?
When working with database entity relationship modeling, should the cardinality between entities be translated/ read from both ends of the notation?
In other words, should a relationship between entities have the ability to understood if read forwards and backwards?
Chapter 5 Solutions
Modern Database Management (12th Edition)
Ch. 5 - Prob. 5.1RQCh. 5 - Prob. 5.2RQCh. 5 - Prob. 5.3RQCh. 5 - Prob. 5.4RQCh. 5 - Prob. 5.5RQCh. 5 - Prob. 5.6RQCh. 5 - Prob. 5.7RQCh. 5 - Prob. 5.8RQCh. 5 - Explain why you sometimes have to reserve much...Ch. 5 - Why are field values sometimes coded?
Ch. 5 - Prob. 5.11RQCh. 5 - Prob. 5.12RQCh. 5 - Explain why normalized relations may not comprise...Ch. 5 - Prob. 5.14RQCh. 5 - List three common situations that suggest that...Ch. 5 - Explain the reasons why some experts are against...Ch. 5 - Prob. 5.17RQCh. 5 - Prob. 5.18RQCh. 5 - Prob. 5.19RQCh. 5 - Prob. 5.20RQCh. 5 - Prob. 5.21RQCh. 5 - State nine rules of thumb for choosing indexes.Ch. 5 - One of the strongest recommendations regarding...Ch. 5 - Explain why an index is useful only if there is...Ch. 5 - Indexing can clearly be very beneficial. Why...Ch. 5 - Consider the following two relations for...Ch. 5 - Prob. 5.28PAECh. 5 - Prob. 5.29PAECh. 5 - Prob. 5.30PAECh. 5 - Prob. 5.31PAECh. 5 - Suppose you are designing a default value for the...Ch. 5 - When a student has not chosen a major at a...Ch. 5 - Prob. 5.34PAECh. 5 - Prob. 5.35PAECh. 5 - Consider the relations in Problem and Exercise...Ch. 5 - Prob. 5.37PAECh. 5 - Prob. 5.38PAECh. 5 - Prob. 5.39PAECh. 5 - Prob. 5.40PAECh. 5 - Prob. 5.41PAECh. 5 - Consider the relations specified in Problem and...Ch. 5 - Prob. 5.43PAECh. 5 - Prob. 5.44PAECh. 5 - Prob. 5.45PAECh. 5 - Prob. 5.46PAECh. 5 - Prob. 5.47PAECh. 5 - Problems and Exercises 8-65 through 8-68 refer to...Ch. 5 - Refer to the large Pine Valley Furniture Company...Ch. 5 - Problems and Exercises 8-65i5 through 8-68 refer...Ch. 5 - Refer to Figure 4-5 0. For each of the following...
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- What is the reason for normalised relations may not compromise an efficient physical implementation structure ?arrow_forwardComputer Science: Why normalized relations may not compromise an efficient physical implementation structure.arrow_forwardBuild an entity-relationship diagram, deriving relations and validating relations using normalization up to third normal formarrow_forward
- Should the cardinality between entities be translated/read from both ends of the notation when dealing with database entity relationship modelling? In other words, should a relationship between things be understandable when read both forwards and backwards?arrow_forwardDirect connections between external entities and the database are not permitted under any circumstances. It should be kept in mind as one of the data flow diagram design concepts to consider. What do you think the repercussions of this suggestion will be?arrow_forwardWhat characteristics are associated with normalisation processes that make use of functional dependencies?arrow_forward
- What are the rules for choosing how to recognize and create connections between entities in the ER-Model?arrow_forwardProduce an entity relationship diagram for a relational database that will be able to address the case study. It is your task to design a database that will adhere to good design principles.arrow_forwardJustify how the main key of a relation is connected to all of the qualities of the relationship in issue, as well as the functional dependencies that exist among all of those features.arrow_forward
- The form of data independence in which the schema may be modified conceptually without affecting the exterior structure is referred as asarrow_forwardIt is important to build a hybrid merge-join technique in order to accomplish the task of combining two relations that are not physically ordered but do share an index on the features that are in concern.arrow_forwardDiscuss how traceability relations are classified, elicit a brief example that defines the classification context, and draw a diagram if necessary.arrow_forward
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