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Author Question: Double-ended arrows are used to represent data flowing in both directions. Indicate whether the ... (Read 160 times)

roselinechinyere27m

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on: Jul 7, 2018
Double-ended arrows are used to represent data flowing in both directions.
 
  Indicate whether the statement is true or false

Question 2

An order number is a good example of a candidate key.
 
  Indicate whether the statement is true or false


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yeungji

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Reply #1 on: Jul 7, 2018
Answer to Question 1

FALSE
Explanation: Although data may flow in both directions, it is usually indicated by two separate arrows.
CL

Answer to Question 2

TRUE
Explanation: An order number is a unique characteristic that distinguishes entity instances.
CL


roselinechinyere27m

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Reply #2 on: Jul 7, 2018
Thank you


yeungji

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Reply #3 on: Jul 7, 2018
No problemo


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