Database Concepts (7th Edition)
7th Edition
ISBN: 9780133544626
Author: David M. Kroenke, David J. Auer
Publisher: PEARSON
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Textbook Question
Chapter 2, Problem 2.32RQ
Examine the data in the Veterinary Office List—Version One in Figure 1-34 (see page 63), and state assumptions about functional dependencies in that table. What is the danger of making such conclusions on the basis of sample data?
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Examine the data in the Veterinary Office List—Version Two in Figure 1-31 (see page 72) and state assumptions about functional dependencies in that table
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Chapter 2 Solutions
Database Concepts (7th Edition)
Ch. 2 - Prob. 2.1RQCh. 2 - Define the term entity, and give an example of an...Ch. 2 - Prob. 2.3RQCh. 2 - Prob. 2.4RQCh. 2 - Prob. 2.5RQCh. 2 - Prob. 2.6RQCh. 2 - Prob. 2.7RQCh. 2 - Prob. 2.8RQCh. 2 - Prob. 2.9RQCh. 2 - Define the term unique key and give an example.
Ch. 2 - Prob. 2.11RQCh. 2 - Prob. 2.12RQCh. 2 - Prob. 2.13RQCh. 2 - Describe four uses of a primary key.Ch. 2 - Prob. 2.15RQCh. 2 - Prob. 2.16RQCh. 2 - Prob. 2.17RQCh. 2 - Explain the term foreign key, and give an example.Ch. 2 - Prob. 2.19RQCh. 2 - Prob. 2.20RQCh. 2 - Explain three possible interpretations of a null...Ch. 2 - Give an example of a null value (other than one...Ch. 2 - Prob. 2.23RQCh. 2 - Prob. 2.24RQCh. 2 - Prob. 2.25RQCh. 2 - Prob. 2.26RQCh. 2 - Prob. 2.27RQCh. 2 - Define the term primary key in terms of functional...Ch. 2 - Prob. 2.31RQCh. 2 - Examine the data in the Veterinary Office...Ch. 2 - Prob. 2.33RQCh. 2 - Describe a modification problem that occurs when...Ch. 2 - Prob. 2.35RQCh. 2 - Prob. 2.36RQCh. 2 - Prob. 2.37RQCh. 2 - Apply the normalization process to the Veterinary...Ch. 2 - Prob. 2.39ECh. 2 - Prob. 2.40E
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- Why is it necessary to divide the data into training and validation sets? What will be the purpose of the training set? What is the purpose of the validation set?arrow_forwardhow to Generate the migration for association table?arrow_forwardNormalize your tables to the third normal form. Show your work in details. Is it in First, Second, or third? And explain why.You don't need more info, you just need to explain why they are in the First, Second, or third normal form. There no coding.arrow_forward
- What exactly is denormalization?arrow_forwardWhat does the term "transitive" mean? What is the rule for converting tables in the second normal form to tables in the third normal form?arrow_forwardYou will need to create the database tables and choose sensible data types for each column.Make sure to maintain entity and referential integrity, and implement all the above constraints.Since other developers work in parallel on other parts of the system, you will need to strictly follow the above specification to correctly implemented in your database. Otherwise, the other software will not be able to use your database. This means, one needs to be able to rely on all constraints being correct, the spelling of table and column names being as given, and that the data types that you chose will allow for sensible data to be added to the database in the future.For testing purposes, you are asked to insert the data specified below into the tables, but no other data except this.In short:1. You will need to create the tables as specified2. You will need to add the data specified Please use the 3.sql and implement your tables using the sketched CREATE TABLE commands. Add the necessary queries…arrow_forward
- How many global descriptor tables can exist?arrow_forwardIf something is transitive, what does that entail? What is the rule for converting tables from the second normal form to the third normal form?arrow_forwardThe meaning of the word "transitive" We know that tables in second normal form can be changed to tables in third normal form, but what is the rule for making this transformation?arrow_forward
- The one-to-many relationship between two tables is made by including the primary key from one table into the other, thus making it a: (SELECT ONLY ONE ANSWER) A)Compound key B) Foreign key C) Important key D)Primary keyarrow_forwardCould you find the reasons why this set of data items is not in 3NF and tell what normal form if any it is inarrow_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_forward
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