Pearson eText for Modern Database Management -- Instant Access (Pearson+)
13th Edition
ISBN: 9780137305940
Author: Jeffrey Hoffer, Ramesh Venkataraman
Publisher: PEARSON+
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Textbook Question
Chapter 4, Problem 4.12RQ
Describe how the following components of an E-R diagram are transformed into relations:
- regular entity type
- relationship (1: M)
- relationship (M:N)
- relationship (supertype/subtype)
- multivalued attribute
- weak entity
- composite attribute
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Chapter 4 Solutions
Pearson eText for Modern Database Management -- Instant Access (Pearson+)
Ch. 4 - Define each of the following terms: determinant...Ch. 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 - Prob. 4.39PAECh. 4 - Transform Figure 2-15a, attribute version, to 3NF...Ch. 4 - The Public Safety office at Millennium College...Ch. 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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- Data modelling is most often accomplished through the use of a(an) ________________. a. entity-relationship diagram b. data-flow diagram c. functional decomposition diagram d. activity diagramarrow_forwardData modeling is most often accomplished through the use of a(n) __________________. a. entity-relationship diagram b. data-flow diagram c. functional decomposition diagram d. activity diagramarrow_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
- Which of the following is a key part of conceptual design in an entity relationship model? This model uses column names instead of attributes. In this model, the characteristics such as location, path, and format are described. This model converts entities into tables. In this model, no primary keys are specified in the entities.arrow_forwardDistinguish between a relationship and anassociative entity, and use associative entitiesin a data model when appropriatearrow_forwardDescribe how the composite attribute of an E-R diagram is transformed into relationsarrow_forward
- Based on Entity Relationship Diagram (ERD) below; a) Write the correct business rules for all entities. b) Write the suitable relationship name for (a) and (b). RESERVATION GUEST ROOM PK RSV_ID PK GUEST_ID RSV_DATE PK ROOM_ID GUEST_NAME ARRIVAL_DATE (b) ROOM_TYPE GUEST_PHONENO (a) DEPART_DATE ROOM_RATE GUEST_ADDRESS NO_OF_GUESTS FK1 RSV_ID NO_OF_ROOMS FK1 GUEST_IDarrow_forwardIn what way is it different between a weak entity and a strong entity that must have a connection with another entity?arrow_forwardExplain ENTITY EXTRACTION AND ER DIAGRAMarrow_forward
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