Database Systems: Design, Implementation, & Management
12th Edition
ISBN: 9781305627482
Author: Carlos Coronel, Steven Morris
Publisher: Cengage Learning
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Question
Chapter 5, Problem 5RQ
Program Plan Intro
Subtype:
- Subtype is one type of entity which inherits the attributes from other entity.
- The subtype relationship is a grouping of entities type in single entity that shares the common attributes or relationships which are different from other grouping.
- It is related to an entity supertype, where the supertype entity has common characteristics and the subtype entity has the unique characteristics of each entity subtype.
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Chapter 5 Solutions
Database Systems: Design, Implementation, & Management
Ch. 5 - Prob. 1RQCh. 5 - What kinds of data would you store in an entity...Ch. 5 - Prob. 3RQCh. 5 - What is a subtype discriminator? Give an example...Ch. 5 - Prob. 5RQCh. 5 - What is the difference between partial...Ch. 5 - Prob. 7RQCh. 5 - According to the data model, is it required that...Ch. 5 - Prob. 9RQCh. 5 - Prob. 10RQ
Ch. 5 - Prob. 11RQCh. 5 - Prob. 12RQCh. 5 - Prob. 13RQCh. 5 - When implementing a 1:1 relationship, where should...Ch. 5 - What is time-variant data, and how would you deal...Ch. 5 - Prob. 16RQCh. 5 - Prob. 1PCh. 5 - Prob. 2PCh. 5 - Prob. 3PCh. 5 - Prob. 4PCh. 5 - Prob. 5PCh. 5 - Prob. 6PCh. 5 - Prob. 7PCh. 5 - Prob. 8CCh. 5 - Prob. 9CCh. 5 - Prob. 10C
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Similar questions
- Examine the database table choices for subtype associations.What factors would you use to choose one design over another?arrow_forwardDiscuss the database table options available when implementing subtype associations. Discuss the considerations you would use in choosing one design over the othersarrow_forwardWhat are the Feature Selection for Classification?arrow_forward
- When using subtype associations, talk about the database table choices that are accessible.Decide the design you want to employ and talk about the relevant issues.arrow_forwardGive an example of each of the following: a. a supertype/subtype relationship where the disjoint rule applies b. a supertype/ subtype relationship where the overlap rule appliesarrow_forwardWhat is an exclusive subtype relationship? Give an example other than one shown in this book. Draw an IE Crow’s Foot E-R diagram for your examplearrow_forward
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