Database Systems: Design, Implementation, & Management
12th Edition
ISBN: 9781305627482
Author: Carlos Coronel, Steven Morris
Publisher: Cengage Learning
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Chapter 4, Problem 6RQ
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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...
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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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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
- can 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_forwardWhat is a Attribute interpolation?arrow_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
- 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_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_forwardDescribe 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_forward
- Although 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_forwardWhat distinguishes a variable reference model from a variable value model? Why is it important to distinguish between them?arrow_forwardIn computer programming, selection structures are essential, but they have their limits. The same repetitive procedure is required for many consumers, online clients, and other forms of transactions across all applications. Does each of these occupations have its own set of rules? What sets these structures apart from the rest?arrow_forward
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