Oracle 12c: SQL
Oracle 12c: SQL
3rd Edition
ISBN: 9781305251038
Author: Joan Casteel
Publisher: Cengage Learning
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Chapter 1, Problem 15MC

Which of the following symbols represents an optional relationship in an E-R model?

  1. a. a straight line
  2. b. a dashed line
  3. c. a straight line with a crow’s foot at both ends
  4. d. a straight line with a crow’s foot at one end
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Which of the following symbols represents an optional relationship in an E-R model?a. a straight lineb. a dashed linec. a straight line with a crow’s foot at both endsd. a straight line with a crow’s foot at one end
Q.Create draw a Er diagram for any organization such as a company,hospital,bank or anything else the idea should be different and should not be plagiarized a sample er diagram to give idea is attached
Which of the following is NOT true about the diagram? Select one: a. If the "description" attribute is separated as a class, "price" and "itemID" should be defined as attributes of the description class. b.It is a design class diagram. c.It captures real world concepts.  d.According to the design, there will be no record of items left in the system after all item instances are sold out.  e.It can be improved by taking out the "description" attribute and define it as a separate class.
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