Modern Database Management (12th Edition)
12th Edition
ISBN: 9780133544619
Author: Jeffrey A. Hoffer, Ramesh Venkataraman, Heikki Topi
Publisher: PEARSON
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Chapter 4, Problem 4.49PAE
Program Plan Intro
Identify normal forms of given relations and convert relations into an EER diagram in case they are in 3NF.
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Chapter 4 Solutions
Modern Database Management (12th Edition)
Ch. 4 - Prob. 4.1RQCh. 4 - Prob. 4.2RQCh. 4 - Prob. 4.3RQCh. 4 - Describe the primary differences between the...Ch. 4 - Summarize six important properties of relations.Ch. 4 - Describe two properties that each candidate key...Ch. 4 - Describe the three types of anomalies that can...Ch. 4 - Demonstrate each of the anomaly types with an...Ch. 4 - Fill in the blanks in each of the following...Ch. 4 - What is a well-structured relation? Why are...
Ch. 4 - Prob. 4.11RQCh. 4 - Describe how the following components of an E-R...Ch. 4 - Prob. 4.13RQCh. 4 - Prob. 4.14RQCh. 4 - Briefly describe four typical problems that often...Ch. 4 - Prob. 4.16RQCh. 4 - Explain how each of the following types of...Ch. 4 - Prob. 4.18RQCh. 4 - Prob. 4.19RQCh. 4 - Prob. 4.20RQCh. 4 - Prob. 4.21RQCh. 4 - What is the relationship between the primary key...Ch. 4 - Prob. 4.23RQCh. 4 - Explain what can be done with primary keys to...Ch. 4 - Prob. 4.25RQCh. 4 - Explain three conditions that suggest a surrogate...Ch. 4 - Prob. 4.27RQCh. 4 - For each of the following E-R diagrams from...Ch. 4 - Prob. 4.29PAECh. 4 - Prob. 4.30PAECh. 4 - For your answers to the following Problems and...Ch. 4 - Figure 4-3212 shows a class list for Millennium...Ch. 4 - Prob. 4.33PAECh. 4 - Prob. 4.34PAECh. 4 - Prob. 4.35PAECh. 4 - Prob. 4.36PAECh. 4 - Prob. 4.37PAECh. 4 - Prob. 4.38PAECh. 4 - For your answers to the following Problems and...Ch. 4 - Transform Figure 2-15a, attribute version, to 3NF...Ch. 4 - Prob. 4.41PAECh. 4 - Prob. 4.42PAECh. 4 - Prob. 4.43PAECh. 4 - Prob. 4.44PAECh. 4 - For your answers to Problem and Exercise 3-33 from...Ch. 4 - Prob. 4.46PAECh. 4 - Prob. 4.47PAECh. 4 - Figure 4-38 includes an EER diagram for a...Ch. 4 - Prob. 4.49PAECh. 4 - Prob. 4.50PAECh. 4 - Prob. 4.51PAECh. 4 - Prob. 4.52PAECh. 4 - Figure 4-40 shows an EER diagram for a university...Ch. 4 - Explore the data included in Table 4-9. Assume...Ch. 4 - Prob. 4.55PAECh. 4 - Prob. 4.56PAECh. 4 - Prob. 4.57PAECh. 4 - Prob. 4.58PAE
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- Convert the ER diagram to relations in the normal manner to capture as many constraints as possible, and then identify which of the answers is a relation schema. A. Dependents(ID, name, bDate) B. Employees(ID, name, street, city, state, phones, sDate, lengthEmp) C. Coverage(ID, name) D. Employees(ID, name, street, city, state, sDate, lengthEmp)arrow_forwardThis is a Database course. Please explain how you get the answer and if there is a formula for such kind of questions. I would love to understand how that question is answered as I have an exam tomorrow. I guessed the answer as 5 lol but is wrong. Thank you in advance.arrow_forwardConsider the following E/R diagram with isa relationships, noting that attribute b is the key of R. If we use an E/R-style approach and convert this diagram into relations, which of the following relations will be among the result? Select one: Y(a,c,d) T(a,b,d) Z(b,c) S X(a,b,c,d) R barrow_forward
- Discuss the classification of traceability relations; elicit a brief example that describes the classification context;arrow_forwardAn explanation of three different scenarios in which it might be appropriate to use a surrogate key in place of the relation's primary key is provided here.arrow_forwardSummarize six important properties of relationsarrow_forward
- Should the cardinality between entities be translated/read from both ends of the notation when dealing with database entity relationship modeling? To put it another way, can a connection between two things be comprehended by reading it both forward and backward?arrow_forwardThis is a Database course. Please explain how you get the answer and if there is a formula for such kinds of questions. I would love to understand how that question is answered as I have an exam tomorrow. I got 3 as answer but it's wrong. Thank you in advance.arrow_forwardTranslate the E/R diagram that you draw in the previous question into a set of relations, clearly marking all references and keys. Also explain your translation with a paragraph. thats the previous question :Draw an Entity Relationship diagram for modeling the following system. Use relational modelling techniques in your design. You are free to make reasonable assumptions for your model unless they conflict with the definition below. Also explain your design with a paragraph. [Caution: Create your solution using paper and pen. Then put the image of your solution here. Drawing/writing with computer tools will not be accepted. Also include your name and signature in the solution paper]Problem definition: “There is a need to keep track of data for a hospital. The hospital building consists of several departments. Each department is identified with its name. For each department, the following data should also be stored: the number of floors, opening hour, and closing hour. Each…arrow_forward
- What is the purpose of entity-relationship diagrams? What sort of symbol is used to depict a connection, and how does it work? What exactly does the phrase "associative entity" imply and what does it mean? Give an example.arrow_forwardDescribe how the multivalued attribute of an E-R diagram is transformed into relationsarrow_forwardSpecifically, on which side of a many-to-one connection does the primary key of one entity function as a foreign key? There is a huge number of relationships specified on one side of the diagram. both from the inside and the outside It is possible to define two relationships at the same time. On the one hand, one connection is defined; on the other, another relationship is defined.arrow_forward
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