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Principles of Information Systems ...

12th Edition
Ralph Stair + 1 other
Publisher: Cengage Learning
ISBN: 9781285867168

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BuyFindarrow_forward

Principles of Information Systems ...

12th Edition
Ralph Stair + 1 other
Publisher: Cengage Learning
ISBN: 9781285867168
Chapter 12, Problem 12SAT
Textbook Problem
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Data modeling is most often accomplished through the use of a(n) __________________.

  1. a. entity-relationship diagram
  2. b. data-flow diagram
  3. c. functional decomposition diagram
  4. d. activity diagram

Program Description Answer

Data modeling is accomplished with the use of Entity-Relationship (ER) diagram.

Hence, the correct answer is option “A”.

Explanation of Solution

Entity relationship diagram:

Entity relationship diagram is basically a picture or snapshot about the business system that includes the information stored, created and represented by this diagram.

  • Entities may represent the physical object, event, or concept.
  • An attribute defines the property of an entity.
  • Relationship denotes the link between the entities.
    • If an independent child entity is present in a relationship, then it is called as non-identifying relationship.
    • If a dependent child entity is present in a relationship, then it is called as non-identifying relationship.

Explanation for incorrect options:

Data-flow diagram:

  • The data-flow diagram is a method of representing the flow of data of a system or a process.
  • It includes the data or information of all inputs and outputs of the process or system.
  • It doesn’t include control flow, decision rules or loops...

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Chapter 12 Solutions

Principles of Information Systems (MindTap Course List)
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