Modern Database Management
13th Edition
ISBN: 9780134773650
Author: Hoffer
Publisher: PEARSON
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Chapter 2, Problem 2.4RQ
Program Plan Intro
Four reasons why data modelling is important.
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Give four reasons why many system designers
believe that data modeling is important and
arguably the most important part of the
systems development process.
Give four reasons why many system designers believe data modelling is an important, if not the most important, component of the system development process.
When explaining operations that are not directly related to system analysis, you may nevertheless use structured English to try to make your points more clear.
Chapter 2 Solutions
Modern Database Management
Ch. 2 - Define each of the following terms: entity type...Ch. 2 - Match the following terms and definitions....Ch. 2 - Contrast the following terms: stored attribute;...Ch. 2 - Prob. 2.4RQCh. 2 - Prob. 2.5RQCh. 2 - Prob. 2.6RQCh. 2 - State six general guidelines for naming data...Ch. 2 - Prob. 2.8RQCh. 2 - Prob. 2.9RQCh. 2 - State three conditions that suggest the designer...
Ch. 2 - List the four types of cardinality constraints,...Ch. 2 - Give an example, Other than those described in...Ch. 2 - What is the degree of a relationship? List the...Ch. 2 - Give an example (Other than those described in...Ch. 2 - Give an example of each of the following, other...Ch. 2 - Give an example of the use of effective (or...Ch. 2 - State a rule that says when to extract an...Ch. 2 - Prob. 2.18RQCh. 2 - In addition to explaining what action is being...Ch. 2 - For the Manages relationship in Figure 2-12a,...Ch. 2 - Explain the distinction between entity type and...Ch. 2 - Why is it recommended that every ternary...Ch. 2 - A cellular operator needs a database to keep track...Ch. 2 - Prob. 2.24PAECh. 2 - Answer the following questions concerning Figure...Ch. 2 - Prob. 2.26PAECh. 2 - You may have been assigned a CASE or a drawing...Ch. 2 - Consider the two E-R diagrams in Figure 2-25 Q,...Ch. 2 - Prob. 2.29PAECh. 2 - Are associative entities also weak entities? Why...Ch. 2 - Because Visio does not explicitly show associative...Ch. 2 - Figure 2-26 shows a grade report that is mailed to...Ch. 2 - Prob. 2.33PAECh. 2 - The Is Married To relationship in Figure 2-12a...Ch. 2 - Figure 2-27 represents a situation of students who...Ch. 2 - Figure 2-28 shows two diagrams (A and B), both of...Ch. 2 - Prob. 2.37PAECh. 2 - Review Figure 2-8LQ and Figure 2-22. Identify any...Ch. 2 - Prob. 2.39PAECh. 2 - Prob. 2.40PAECh. 2 - Prob. 2.41PAECh. 2 - Prob. 2.42PAECh. 2 - Prob. 2.43PAECh. 2 - Prob. 2.44PAECh. 2 - Prob. 2.45PAECh. 2 - Prob. 2.46PAECh. 2 - Prob. 2.47PAECh. 2 - Prob. 2.48PAECh. 2 - Draw an ERD for the following situation. (State...Ch. 2 - Prob. 2.50PAECh. 2 - Prob. 2.51PAECh. 2 - Review your answer to Problem and Exercise 2-49 if...
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Similar questions
- What does "defining a system model" mean? What elements must to be taken into account when developing simple models?arrow_forwardTry to describe processes that are not part of systems analysis in a way that is clear and understandable.arrow_forwardYou should attempt, preferably in well-organized English, to describe processes that are not part of the systems analysis process.arrow_forward
- When discussing processes that are not related to systems analysis, use structured English.arrow_forwardHow can Data Flow Diagrams be used to represent system processes, data stores, data flows, and external entities in system modeling?arrow_forwardWhen discussing processes that fall beyond the purview of systems analysis, you may find that use structured English is helpful.arrow_forward
- There are several ways in which system models diverge from conventional models. There are a lot of considerations that should be made while building simple models.arrow_forwardIn your own words, explain what you mean by the term "system model". In the process of constructing basic models, what considerations should be made?arrow_forwardProvide an example of a system where a Data Flow Model would be an appropriate approach for system modeling.arrow_forward
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