Modern Database Management
13th Edition
ISBN: 9780134773650
Author: Hoffer
Publisher: PEARSON
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Chapter 1, Problem 1.14RQ
Program Plan Intro
Four perspective which can be used to explore transactional systems in this book and main competencies associated with each of these perspectives.
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To do this, we'll compare and contrast the Rational Unified model with the more traditional Waterfall approach.
How are UML diagrams distinct from one another, and what are those distinctions? Provide a brief explanation for each.
(a) Explain carefully four ways in which the diagram fails to model the intended world. In each case make sure you contrast the actual meaning with the intended meaning.
(b) Give an entity-relationship diagram, still using two entity types, which correctly models the intended world.
(c) Give a database schema (including primary keys) for the ER diagram which you have given in the previous part.
(d) Is there any part of the ER diagram which is not captured in the schema? How might this aspect be captured in the final database?
Chapter 1 Solutions
Modern Database Management
Ch. 1 - Prob. 1.1RQCh. 1 - Prob. 1.2RQCh. 1 - Prob. 1.3RQCh. 1 - Prob. 1.4RQCh. 1 - Prob. 1.5RQCh. 1 - Prob. 1.6RQCh. 1 - Prob. 1.7RQCh. 1 - How are relationships between tables expressed in...Ch. 1 - What does the term data independence mean, and why...Ch. 1 - Prob. 1.10RQ
Ch. 1 - Prob. 1.11RQCh. 1 - Prob. 1.12RQCh. 1 - Prob. 1.13RQCh. 1 - Prob. 1.14RQCh. 1 - Prob. 1.15RQCh. 1 - Prob. 1.16RQCh. 1 - Prob. 1.17RQCh. 1 - Prob. 1.18RQCh. 1 - Prob. 1.19RQCh. 1 - Prob. 1.20RQCh. 1 - Prob. 1.21RQCh. 1 - Prob. 1.22RQCh. 1 - Prob. 1.23RQCh. 1 - Prob. 1.24RQCh. 1 - Prob. 1.25RQCh. 1 - Prob. 1.26RQCh. 1 - Prob. 1.27PAECh. 1 - Prob. 1.28PAECh. 1 - Prob. 1.29PAECh. 1 - Prob. 1.30PAECh. 1 - Prob. 1.31PAECh. 1 - Prob. 1.32PAECh. 1 - Great Lakes Insurance would like to implement a...Ch. 1 - Figure 1-22 shows an enterprise data model for a...Ch. 1 - Prob. 1.35PAECh. 1 - Prob. 1.36PAECh. 1 - Prob. 1.37PAECh. 1 - Prob. 1.38PAECh. 1 - Prob. 1.39PAECh. 1 - Prob. 1.40PAECh. 1 - Prob. 1.41PAECh. 1 - Prob. 1.42PAECh. 1 - Prob. 1.43PAECh. 1 - Prob. 1.44PAECh. 1 - Consider the project data model shown in Figure...Ch. 1 - Answer the following questions concerning Figures...Ch. 1 - Prob. 1.47PAECh. 1 - Helen Jarvis wants to determine the most important...Ch. 1 - In this chapter, we described four important data...
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Similar questions
- 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_forwardDraw these on the given diagram: Associations (aggregations/compositions if needed) with names and multiplicities, generalization, attributes (withvisibility and attribute types).arrow_forwardDraw an entity-relationship diagram, including minimum and maximum cardinality, for the following: The system stores information about two things: cars and owners. A car has attributes for make, model, and year. The owner has attributes for name and address. Assume that a car must be owned by one owner and an owner can own many cars, but an owner might not own any cars (perhaps she just sold them all, but you still want a record of her in the system).arrow_forward
- what can be very interesting about the Entity-Relationship (ER) Modeling that people may forget about ( i am not talking about the main function or explication but just a concept/part that people tend to overlook when they study it for the first time?arrow_forwardWhat are the two main types of UML diagrams? How are they used?arrow_forwardDraw an ER diagram for the following scenario- • An instructor has an ID, a name, and a phone number. An instructor teaches a course • A course has a code, course name, credits, and an instructor. Each course uses a textbook. • A textbook has ISBN, name, publisher, editor, and authors. Your ER diagram should have entities, attributes, composite attribute, multivalued attribute, key attributes, binary relationships, and a total participation. Explain your rationale behind each design choice. Please draw the ER diagram on paper showing all seperate parts for each instructor, course and textbook. Showing each connection seperately and explaining which connection is whicharrow_forward
- OO questions Create the UML diagram for the two entities( person, books). A person has borrowed some books from a library. This can be represented as one to many associations. Please implant this bidirectional association considering that there is no order of the books.arrow_forwardThe Model-View-Controller design pattern partitions data access from business logic, data presentation from user interaction, and user interaction from data presentation. Moreover, it also partitions data presentation from user interaction. In this discussion or explanation, discuss or offer.arrow_forwardDiscuss the categorization of traceability relations; elicit a short example that describes the classification context; and, if required, construct a diagram.arrow_forward
- What does the weak entity type actually mean? What's the secret? Give an instance What does alternative specialization mean?How am I shown on the ER diagram? Give an example and create a diagram to match it.arrow_forwardWith the use of appropriate diagram, briefly describe the flow of data in the architecture of computer system.arrow_forwardExplain prototype model with diagram. What are the advantages, disadvantages and use of this model.arrow_forward
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