Answered: Crow-foot symbol in a crow-foot diagram…

Computer Networking: A Top-Down Approach (7th Edition)

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

Section: Chapter Questions

Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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Question

Crow-foot symbol in a crow-foot diagram is depicted on a side of entity which is

one only

many

none

none or one

Expert Solution

Explanation

1) Crow’s foot notations illustrate the relationship between entities in a crow’s foot diagram.

2) Entities are connected by lines, and symbols at either end of the line describe the cardinality of the relationship between the entities.

Crow's foot diagrams represent entities as boxes, and relationships as lines between the boxes.
Different shapes at the ends of these lines represent the relative cardinality of the relationship.

3) Three symbols are used to represent cardinality

A ring symbol represents "zero"
A dash symbol represents "one"
A crow's foot symbol represents "many" or "infinite"

4) So Crow-foot symbol in a crow-foot diagram is depicted on a side of entity which is many

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