MODERN DATABASE MGMT.(PEARSON CHANNEL)
13th Edition
ISBN: 9780136709299
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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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.
What does it mean to model a system, and how is this done? Are there any special considerations that should be taken while creating simple models?
Exactly what is a system analysis, in your own words?
Chapter 2 Solutions
MODERN DATABASE MGMT.(PEARSON CHANNEL)
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 are the key components of a system model approach?arrow_forwardWhat 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_forward
- You should attempt, preferably in well-organized English, to describe processes that are not part of the systems analysis process.arrow_forwardWhen 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_forward
- When discussing processes that fall beyond the purview of systems analysis, you may find that use structured English is helpful.arrow_forwardThere 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_forward
- Provide an example of a system where a Data Flow Model would be an appropriate approach for system modeling.arrow_forwardGive four reasons why many system designers believethat data modeling is in1portant and arguably the mostin1portant part of the systems development process.arrow_forwardDescribe the principles of model-driven engineering (MDE) and its role in system modeling. How does MDE improve the development process?arrow_forward
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