
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Question
Which of the following statements is true? A function:
a. can have the same definition set as value set
b. associates all different numbers in the definition set to a single number in the value set
c.is a rule that for each element in a set connects it to just one element in another set
d. is a rule that only converts natural numbers to whole numbers
f. may not associate the same number in the value set with two different numbers in the definition set.
h. must not associate one element in the definition set with several in the value set
i. can very well associate several elements in the set of values with one in the definition set
Mark all the answers that are correct.
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