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Author Question: Which of the following notations in an E-R diagram means that the entity is optional and a ... (Read 70 times)

ericka1

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on: Jul 7, 2018
Which of the following notations in an E-R diagram means that the entity is optional and a relationship need not have an entity of that type?
 
  A) vertical bar
  B) arrow
  C) double line
  D) small oval

Question 2

The organization responsible for assigning public IP addresses is called ________.
 
  A) CERN
  B) IEEE
  C) ICANN
  D) ISO
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brittrenee

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Reply #1 on: Jul 7, 2018
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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ericka1

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Reply 2 on: Jul 7, 2018
Excellent

raili21

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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