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Author Question: How is maximum cardinality expressed in crow's foot E-R diagrams? What will be an ideal ... (Read 66 times)

rmenurse

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on: Jul 7, 2018
How is maximum cardinality expressed in crow's foot E-R diagrams?
 
  What will be an ideal response?

Question 2

In a common form of RFM analysis, customers with an R score of 5 are in the 20 of customers who have the most recent orders.
 
  Indicate whether the statement is true or false


diana chang

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

The crow's foot E-R diagram notation uses a hash mark to indicate a maximum cardinality of one and a crow's foot to indicate a maximum cardinality of many. Each symbol is placed immediately next to the rectangle symbolizing an entity. These symbols are combined in various forms to signify 1:1, 1:N and N:M relationships.

Answer to Question 2

FALSE


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