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
expand_more
expand_more
format_list_bulleted
Concept explainers
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
Trending nowThis is a popular solution!
Students have asked these similar questions
Show how to represent a 1:N recursive relationship in your answer to question 5.29. How does this differ from the representation of 1:N nonrecursive relationships?
Despite their usage, selection structures in computer programming have limits. Whether working with customers, online clients, or other transactions, the same approach must be followed. Are there different standards for different occupations? What's so great about these structures?
Create a sample data flow diagram of a database: For example, a residents filling out the form (personal information) and an admin updating/accessing the records of the residents. (Name, address, contact #, family members).
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. 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.Similar questions
- What are some of the features of Tableau that are useful?arrow_forwardcan someone help me write a Prolog relation class(X,Y) that classifies a number X into a category Y, where Y is either negative, zero or positive. Use cuts to make it more efficient. thanksarrow_forwardDraw an ERD for the following situation (Batra et al., 1988). Also, develop the list of words for qualifiers and classes that you use to form attribute names. Explain whyarrow_forward
- Add boundary, control, and entity classes. Please explain additions.arrow_forwardPredicate logic is embedded in numerous programming languages. For example, structured query language (SQL) used by procedural database administrators to build relational database queries relies heavily on the first-order logic variables and quantifiers. What other computer-science or IT jobs rely on predicate logic?arrow_forwardUsing a graphics program, develop an entity-relationship diagram for a database application for an Internet bookstore where students buy textbooks from a salesperson and receive invoices for their purchases. Use Figure 5.5 as a guide.arrow_forward
- Describe the structured analysis approach and object-oriented approach Mention at least one example of a model that supports each approach.Note: please no copyrights.arrow_forwardWhat distinguishes a variable reference model from a variable value model? Why is it important to distinguish between them?arrow_forwardThe relations from Exercise 3 are: a. (1,1), (1,3), (2,2), (3,1), (3,3) b. (1,2), (2,2), (3,2) c. (1,1), (1,2), (1,3), (2,1), (2,3), (3,1), (3,2), (3,3)  There will be 3 directed graphs. One representing a, then b, then carrow_forward
- Make a distinction between structure and class. What is the advantage of class over structure? Give a good example to back up your response.arrow_forwardAlthough while selection structures play a crucial role in programming, they are not perfect. Any program that deals with a large number of users, whether they are consumers, online clients, or any other kind of transaction, has to use the same iterative approach. Do those working in these fields adhere to a code of conduct? What makes these structures unique in comparison to others?arrow_forwardStore the following fields for a library database: AuthorCode, AuthorName, BookTitle, BorrowerAddress, BorrowerName, BorrowerCardNumber, CopiesOfBook, ISBN (International Standard Book Number), LoanDate, PublisherCode, PublisherName, and PublisherAddress. A one-to-many relationship exists between publishers and books. Many-to-many relationships exist between authors and books and between borrowers and books.a. Name the entities for the library database b. Without creating a set of dependency diagrams, write the relational schema that meet 3rd NF requirements. c. Draw the Crow’s Food entity-relationship diagram for the library database.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Principles of Information Systems (MindTap Course...Computer ScienceISBN:9781285867168Author:Ralph Stair, George ReynoldsPublisher:Cengage Learning
Principles of Information Systems (MindTap Course...
Computer Science
ISBN:9781285867168
Author:Ralph Stair, George Reynolds
Publisher:Cengage Learning