MODERN DATABASE MGMT.(PEARSON CHANNEL)
13th Edition
ISBN: 9780136709299
Author: Hoffer
Publisher: PEARSON
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Chapter 4, Problem 4.40PAE
Transform Figure 2-15a, attribute version, to 3NF relations. Transform Figure 2-15b, relationship version, to 3NF relations. Compare these two sets of 3NF relations with those in Figure 4-10 What Observations and conclusions do you reach by comparing these different sets of 3NF relations?
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Conversion of E-R diagram to relational schemaSchema is a correct translation of the E-R diagram submitted with appropriate tables, columns, primary keys, and foreign keys.
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Chapter 4 Solutions
MODERN DATABASE MGMT.(PEARSON CHANNEL)
Ch. 4 - Define each of the following terms: determinant...Ch. 4 - Prob. 4.2RQCh. 4 - Prob. 4.3RQCh. 4 - Describe the primary differences between the...Ch. 4 - Summarize six important properties of relations.Ch. 4 - Describe two properties that each candidate key...Ch. 4 - Describe the three types of anomalies that can...Ch. 4 - Demonstrate each of the anomaly types with an...Ch. 4 - Fill in the blanks in each of the following...Ch. 4 - What is a well-structured relation? Why are...
Ch. 4 - Prob. 4.11RQCh. 4 - Describe how the following components of an E-R...Ch. 4 - Prob. 4.13RQCh. 4 - Prob. 4.14RQCh. 4 - Briefly describe four typical problems that often...Ch. 4 - Prob. 4.16RQCh. 4 - Explain how each of the following types of...Ch. 4 - Prob. 4.18RQCh. 4 - Prob. 4.19RQCh. 4 - Prob. 4.20RQCh. 4 - Prob. 4.21RQCh. 4 - What is the relationship between the primary key...Ch. 4 - Prob. 4.23RQCh. 4 - Explain what can be done with primary keys to...Ch. 4 - Prob. 4.25RQCh. 4 - Explain three conditions that suggest a surrogate...Ch. 4 - Prob. 4.27RQCh. 4 - For each of the following E-R diagrams from...Ch. 4 - Prob. 4.29PAECh. 4 - Prob. 4.30PAECh. 4 - For your answers to the following Problems and...Ch. 4 - Figure 4-3212 shows a class list for Millennium...Ch. 4 - Prob. 4.33PAECh. 4 - Prob. 4.34PAECh. 4 - Prob. 4.35PAECh. 4 - Prob. 4.36PAECh. 4 - Prob. 4.37PAECh. 4 - Prob. 4.38PAECh. 4 - Prob. 4.39PAECh. 4 - Transform Figure 2-15a, attribute version, to 3NF...Ch. 4 - The Public Safety office at Millennium College...Ch. 4 - Prob. 4.42PAECh. 4 - Prob. 4.43PAECh. 4 - Prob. 4.44PAECh. 4 - For your answers to Problem and Exercise 3-33 from...Ch. 4 - Prob. 4.46PAECh. 4 - Prob. 4.47PAECh. 4 - Figure 4-38 includes an EER diagram for a...Ch. 4 - Prob. 4.49PAECh. 4 - Prob. 4.50PAECh. 4 - Prob. 4.51PAECh. 4 - Prob. 4.52PAECh. 4 - Figure 4-40 shows an EER diagram for a university...Ch. 4 - Explore the data included in Table 4-9. Assume...Ch. 4 - Prob. 4.55PAECh. 4 - Prob. 4.56PAECh. 4 - Prob. 4.57PAECh. 4 - Prob. 4.58PAE
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- Convert the following UML diagram to relations:arrow_forwardPart 2: Relational data model. Take a subset of the ideas from the conceptual model you constructed in Part 1 and design a simple relationship model similar to the ones we discussed in Module 2, Video 4 Your model should have at least 5 tables You should include at least 20 attributes, or fields, in your model (20 total across all tables, not per table) Your model should be normalized Identify the primary key in each table, and state whether it is a natural or surrogate key For each relationship between tables, identify any foreign keys needed to define the relationship For each table, identify what type of system or systems you think the data might come from, like those we discussed in Module 1, Video 6.arrow_forwardTransform the EER diagram to a set of relations and develop a relational schema.arrow_forward
- Translate the E-R diagram on page 1 (diagram) to database schema using MySQL Workbench (export as png or pdf). You can ignore the cardinalities on the ternary (Grant) relationship. Interpret the database schema on slide 4. Draw the E-R diagram underlying this schema. No need to draw the attributes.arrow_forwardModify the Er diagram given below and add 5 to 6 more additions to it such as entities attributes relationships etcarrow_forwardConvert the ER diagram in the above question into relational model.arrow_forward
- Translate this ER diagram into a relational schema, Choose appropriate data types for each attribute and include primary key and NotNull constraints.arrow_forwardUse the technique of normalization to validate the structure of your relational schema. Demonstrate that each of your relations is in third normal form (3NF) by displaying the functional dependencies between attributes in each relation. Note, if any of your relations are not in 3NF, this may indicate that your ER model is structurally incorrect or that you have introduced errors in the process of deriving relations from your model.arrow_forwardConsider each of the takes and teaches relations as a fact table; they do not have an explicit measure attribute, but assume each table has a measure attribute reg_count whose value is always 1. What would the dimension attributes and dimension tables be in each case. Would the resultant schemas be star schemas or snowflake schemas?arrow_forward
- Map this ER diagram to a Relational Model and normalize it if needed.arrow_forwardAn ERD has m number of entities (strong, weak, parent, child all combined) and n number of relationship types (of all possible kinds). When transformed to the relational schema, Database designer come up with a solution which contained more than m+n relations. What could possibly be the reason? If you think the designer did a mistake then you can say that in your answer. Explain your answer if you think that will help. Answer:arrow_forwardTransform the following EER diagram into relations and indicate the primary key and foreign keys for each relation.arrow_forward
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Enhanced Entity Relationship Model; Author: Data Science Center;https://www.youtube.com/watch?v=ocQUtXPumdQ;License: Standard YouTube License, CC-BY