Database Systems: Design, Implementation, & Management

11th Edition

ISBN: 9781285196145

Author: Steven, Steven Morris, Carlos Coronel, Carlos, Coronel, Carlos; Morris, Carlos Coronel and Steven Morris, Carlos Coronel; Steven Morris, Steven Morris; Carlos Coronel

Publisher: Cengage Learning

See similar textbooks

Concept explainers

Concepts in Designing Database

A database design is the process of data organization based on a database model. The process deals with identifying what data should be stored in a database and how data elements relate to each other.

Entity Relationship Diagram

Complex real-world applications call for large volumes of data. Therefore, it is necessary to build a great database to store data safely and coherently. The ER data model aids in the process of database design. It helps outline the structure of an organ…

Expert Solution & Answer

Chapter 4, Problem 6RQ

Explanation of Solution

Recursive relationship:

A recursive relationship will exist, if an entity is associated to itself. That is, a relationship can occur among existences of the same entity set. This condition will be found in a unary relationship...

Expert Solution & Answer

Chapter 4 Solutions

Database Systems: Design, Implementation, & Management

Ch. 4 - Prob. 1RQ Ch. 4 - What is a strong (or identifying) relationship,...Ch. 4 - Prob. 4RQ Ch. 4 - Suppose you are working within the framework of...Ch. 4 - Prob. 6RQ Ch. 4 - Prob. 7RQ Ch. 4 - Discuss the difference between a composite key and...Ch. 4 - What two courses of action are available to a...Ch. 4 - Prob. 11RQ Ch. 4 - Discuss two ways in which the 1:M relationship...

Ch. 4 - Prob. 13RQ Ch. 4 - Prob. 14RQ Ch. 4 - Briefly, but precisely, explain the difference...Ch. 4 - What are multivalued attributes, and how can they...Ch. 4 - Prob. 17RQ Ch. 4 - Prob. 18RQ Ch. 4 - What two attributes must be contained in the...Ch. 4 - Describe precisely the composition of the...Ch. 4 - Prob. 21RQ Ch. 4 - Prob. 1P Ch. 4 - Create a complete ERD in Crows Foot notation that...Ch. 4 - Prob. 4P Ch. 4 - Prob. 5P Ch. 4 - Prob. 6P Ch. 4 - Prob. 7P Ch. 4 - Prob. 8P Ch. 4 - Prob. 9C

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.

Recursive relationship: A recursive relationship will exist, if an entity is associated to itself. That is, a relationship can occur among existences of the same entity set. This condition will be found in a unary relationship...

Solution Summary: The author explains that a recursive relationship exists if an entity is associated to itself. This condition is found in unary relationships.

Concept explainers

Explanation of Solution

Recursive relationship: A recursive relationship will exist, if an entity is associated to itself. That is, a relationship can occur among existences of the same entity set. This condition will be found in a unary relationship...

Chapter 4 Solutions

Recursive relationship:

A recursive relationship will exist, if an entity is associated to itself. That is, a relationship can occur among existences of the same entity set. This condition will be found in a unary relationship...