4. Three words are stored in the variables wordl, word2, and word3. The values of the variables are to be updated as shown in the following table. Value Before Value After Variable Updating Updating wordl "xylophone" "zebra" word2 "yarn" "yarn" word3 "zebra" "xylophone" Which of the following code segments can be used to update the values of the variables as shown in the table?

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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4. Three words are stored in the variables wordl, word2, and word3. The values of the variables are to
be updated as shown in the following table.
Value Before
Value After
Variable
Updating
Updating
wordl
"xylophone"
"zebra"
word2
"yarn"
"yarn"
word3
"zebra"
"xylophone"
Which of the following code segments can be used to update the values of the variables as shown in the
table?
temp wordl
A
word3 + wordl
wordl + temp
temp – wordl
B
wordl + word3
word3 + temp
temp + wordl
wordl + word2
word2 + word3
word3 + temp
temp + word3
word3 + word2
word2 + wordl
wordl + temp
Transcribed Image Text:4. Three words are stored in the variables wordl, word2, and word3. The values of the variables are to be updated as shown in the following table. Value Before Value After Variable Updating Updating wordl "xylophone" "zebra" word2 "yarn" "yarn" word3 "zebra" "xylophone" Which of the following code segments can be used to update the values of the variables as shown in the table? temp wordl A word3 + wordl wordl + temp temp – wordl B wordl + word3 word3 + temp temp + wordl wordl + word2 word2 + word3 word3 + temp temp + word3 word3 + word2 word2 + wordl wordl + temp
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