Database Systems: Design, Implementation, & Management
12th Edition
ISBN: 9781305627482
Author: Carlos Coronel, Steven Morris
Publisher: Cengage Learning
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Expert Solution & Answer
Chapter 4, Problem 4RQ
Explanation of Solution
Composite entity and its uses:
In the Entity Relationship Management (ERM), an M: N relationship is effective at the conceptual level. But when implementing the ERM in a relational
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Students have asked these similar questions
What are ASSOciAtive entitieS?
Assignment 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…
Data standardization usually focuses on fixing _ of data while data cleaning usually focuses on fixing _ of data.
A- The entity; data dictionary
B- The attribute; the entity
C- The entity; the attribute
D- Data dictionary; the entity
Chapter 4 Solutions
Database Systems: Design, Implementation, & Management
Ch. 4 - Prob. 1RQCh. 4 - What is a strong (or identifying) relationship,...Ch. 4 - Prob. 4RQCh. 4 - Suppose you are working within the framework of...Ch. 4 - Prob. 6RQCh. 4 - Prob. 7RQCh. 4 - Discuss the difference between a composite key and...Ch. 4 - What two courses of action are available to a...Ch. 4 - Prob. 11RQCh. 4 - Discuss two ways in which the 1:M relationship...
Ch. 4 - Prob. 13RQCh. 4 - Prob. 14RQCh. 4 - Briefly, but precisely, explain the difference...Ch. 4 - What are multivalued attributes, and how can they...Ch. 4 - Prob. 17RQCh. 4 - Prob. 18RQCh. 4 - What two attributes must be contained in the...Ch. 4 - Describe precisely the composition of the...Ch. 4 - Prob. 21RQCh. 4 - Prob. 1PCh. 4 - Create a complete ERD in Crows Foot notation that...Ch. 4 - Prob. 4PCh. 4 - Prob. 5PCh. 4 - Prob. 6PCh. 4 - Prob. 7PCh. 4 - Prob. 8PCh. 4 - Prob. 9PCh. 4 - Prob. 10PCh. 4 - Prob. 11C
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Similar questions
- In the hierarchy of data, what is the difference between a data attribute and a data item? What is the domain of an attribute?arrow_forwardWhat are the uses of DEFINE and DESCRIBE? Please expand and elaborate. DEFINE uses: DESCRIBE uses:arrow_forwardWhat is the origin of StOred verSuS derived AttriButeS?arrow_forward
- What is the role of Entity-Relationship Diagrams (ERD) during the initial stages of database design?arrow_forwarddatabase system computer sciencearrow_forwardProblem statement: Assume that you are an employee of a consultancy company that specializes in the analysis, design, and implementation of database systems. Southern Arkansas University (SAU) IT Group has recently approached your company with a view to implementing a database system for SAU, but they are not familiar with the development process. You are required to present an overview of the fact-finding techniques that your company intends to use to support the development of SAU’s database system. With this task in mind, create a 6-page report (Times New Roman, 12 font-size, double space) that describes each fact-finding technique and how the fact-finding techniques will be used throughout (each step of) the development of the database system.arrow_forward
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