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74. What steps are involved in the conversion to third normal form? ANSWER: Step 1: Make New Tables to Eliminate Transitive Dependencies For every transitive dependency, write a copy of its determinant as a primary key for a new table. A determinant is any attribute whose value determines other values within a row. If Copynght Cengage Leaming. Powered by Cognero. Page 14 Chapter 06: Normalization of Database Tables you have three different transitive dependencies, you will have three different determinants. As with the conversion ta 2NF it is important for the determinant remain in the original tahle to serve as a foreign key. Step 2: Reassign Corresponding Dependent Attributes Identify the attributes that are dependent on each determinant identified in Step 1. Place the dependent attributes in the new tables with their determinants and remove them from their original tables. DIFFICULTY: Difficulty: Moderate REFERENCES: 6-3¢ Conversion to Third Normal Form (3NF) LEARNING OBJECTIVES: 06.03 - Explain how normal forms can be transformed from lower normal forms to higher normal forms 75. Explain the Boyce-Codd normal form (BCNF). How is it related to other normal forms? ANSWER: Atable is in Boyce-Codd normal form (BCNF) when every determinant in the table is a andidate key. A candidate key has the same characteristics as a primary key. but for some reason, it was not chosen to be the primary key. Clearly, when a table contains only one candidate key. the 3NF and the BCNF are equivalent. In other words, BCNF can be violated only when the table contains more than one candidate key. Most designers consider the BCNF to be a special case of the 3NF. In fact, if the techniques shown in this chapter are used, most tables conform to the BCNF requirements once the 3NF is reached. DIFFICULTY: Difficulty: Moderate REFERENCES: 6-6a The Boyce-Codd Normal Form LEARNING OBJECTIVES: 06.03 - Explain how normal forms can be transformed from lower normal forms to higher normal forms Copynght Cengage Leaming. Powered by Cognero. Page 15 Chapter 07: Introduction to Structured Query Language (SQL) True / False 1. A database language enables the user to perform complex queries designed to transform the raw data into useful information. a. True b. False ANSWER: True DIFFICULTY: Difficulty: Easy REFERENCES: 7-1 Introduction to SQL LEARNING OBJECTIVES: 07.01 - Retrieve specified columns of data from a database 2. SQL is considered difficult to learn; its command set has a vocabulary of more than 300 words. a. True b. False ANSWER: False DIFFICULTY: Difficulty: Easy @ O 2