Software Engineering (10th Edition)
10th Edition
ISBN: 9780133943030
Author: Ian Sommerville
Publisher: PEARSON
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Chapter 10, Problem 10.5E
Explain the difference between redundancy and diversity.
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- 1)a Discuss when it is best to use indexes. b) Discuss three possible opportunities for denormalization.arrow_forwardFunctional dependencies that are employed for normalization have what characteristics?arrow_forwardWe discuss the potential performance issues that might arise from using a normalized version of the Index metadata relation.arrow_forward
- Data Normalisation Normalisation is the process of organizing data in a database. This includes creating tables and establishing relationships between those tables according to rules designed both to protect the data and to make the database more flexible by eliminating redundancy and inconsistent dependency. Source: [Online] https://docs.microsoft.com/en-us/office/troubleshoot/access/database-normalization-description [Accessed on: 8 March 2020] For an industry of your choice, obtain a business document (preferably a form). Using the form obtained: 1.1 Upload the form obtained and give a brief background explanation of the business logic for which the form was designed. 1.2 Normalise the data contained within the form to the 3rd Normal Form.arrow_forwardAssignment 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…arrow_forwardWhat sets managed redundancy distinct from uncontrolled redundancy?arrow_forward
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