Oracle 12c: SQL
3rd Edition
ISBN: 9781305251038
Author: Joan Casteel
Publisher: Cengage Learning
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Expert Solution & Answer
Chapter 1, Problem 16MC
Program Description Answer
In an Entity-Relationship (E-R) model, a “many-to-many relationship” represents the need for an additional table.
Hence, correct answer is option “D”.
Expert Solution & Answer
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When is it necessary to represent a many-to-many connection using an associated entity?
Explain entity sets.
What is Concept Map? Explain your answer.
Chapter 1 Solutions
Oracle 12c: SQL
Ch. 1 - Prob. 1RQCh. 1 - Prob. 2RQCh. 1 - Prob. 3RQCh. 1 - Prob. 4RQCh. 1 - Discuss the problems that can be caused by data...Ch. 1 - Explain the role of a primary key.Ch. 1 - Prob. 7RQCh. 1 - Prob. 8RQCh. 1 - What type of relationship can’t be stored in a...Ch. 1 - Identify at least three reasons an organization...
Ch. 1 - Prob. 1MCCh. 1 - Prob. 2MCCh. 1 - Prob. 3MCCh. 1 - Prob. 4MCCh. 1 - Prob. 5MCCh. 1 - Prob. 6MCCh. 1 - Prob. 7MCCh. 1 - Which of the following has no partial or...Ch. 1 - Prob. 9MCCh. 1 - Which of the following has no partial dependencies...Ch. 1 - Which of the following has no repeating groups but...Ch. 1 - Prob. 12MCCh. 1 - Prob. 13MCCh. 1 - A unique identifier for a data row that consists...Ch. 1 - Which of the following symbols represents an...Ch. 1 - Prob. 16MCCh. 1 - Which of the following represents a field in a...Ch. 1 - Which of the following defines a relationship in...Ch. 1 - When part of the data in a table depends on a...Ch. 1 - Which of the following is used to join data...Ch. 1 - Which tables and fields would you access to...Ch. 1 - Prob. 2HOACh. 1 - Prob. 3HOACh. 1 - Prob. 4HOACh. 1 - Access path A database table is composed of...Ch. 1 - Prob. 6HOACh. 1 - Prob. 7HOACh. 1 - Prob. 8HOACh. 1 - Prob. 9HOACh. 1 - Prob. 10HOA
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- The ______________ model is a simple but highly useful way to organize data into collections of two-dimensional tables called relations.arrow_forwardKindly discuss this diagram.arrow_forwardAn entity in A is associated with at most one entity in B. An entity in B, however, can be associated with any number (zero or more) of entities in A. What is the cardinality ratio? a. one to many b. many to one c. one to one d. many to manyarrow_forward
- When is it important to use an associative entity to express a many-to-many relationship?arrow_forwardA bridge/joint table is just what it sounds like. What should you do instead? What's wrong with the other person?arrow_forwardA primary key of another entity as an attribute of an entity creates: A Parent-Child connection exists between the tables. B Many-to-many connection between the tables. C Network model connecting the tables. D A one-to-many relationship between the tables.arrow_forward
- Given the following ERD. ID name salary Instructor Grades teaches ID name salary Student 1) What is the descriptive attribute of the relationship between instructor and student? 2) Is this relationship a one-to-one, a one-to-many, or a many-to-many relationship?arrow_forwardDRAWING E/R DIAGRAM AND RELATIONAL SCHEMAarrow_forwardWhat name diagram is? Correct answer needed.arrow_forward
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