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Author Question: The binary constraint MUST NOT indicates that ________. A) a specific binary relationship must ... (Read 209 times)

HCHenry

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on: Jul 7, 2018
The binary constraint MUST NOT indicates that ________.
 
  A) a specific binary relationship must not be included in a ternary relationship
  B) a table includes values that must not occur in a binary relationship
  C) a table includes values that must not occur in a ternary relationship
  D) a binary relationship includes value combinations that must not occur in a ternary relationship

Question 2

Suppose you have created a data model for an airline based on a variety of forms, reports, user interviews, data sources, etc.
 
  Your client comes forward with a new desired report that includes passenger weights and a relationship between passengers and employees, neither of which is in your E-R diagram. You should ________.A) create a new, separate E-R diagram with just the new information
  B) add the relationship and the weight attribute to the existing data model
  C) add the relationship but not the weight attribute
  D) add the weight attribute but not the relationship


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Dunkey

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

D

Answer to Question 2

B


HCHenry

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Reply 2 on: Jul 7, 2018
Great answer, keep it coming :)

sultansheikh

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Reply 3 on: Yesterday
Excellent

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