Which of the following is a proper use of an aggregate function?
a. COUNT(DISTINCT Product ID)
b. SUM(AVG(Line Item Total))
c. AVG((SELECT Price FROM Products WHERE Category = 'Bikes'))
a. COUNT(DISTINCT Product ID)
Computer Science & Information Technology
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Which of the following is a variable declaration statement?
a. int total; b. import java.util.Scanner; c. public static void main(String args[]) d. // first string entered by user
Computer Science & Information Technology
To record the starting address of each of its files, a portion of the disk’s first track is set aside to hold a(n) __________.
a. directory b. index c. boot record d. table
Computer Science & Information Technology
A String constructor cannot be passed ________.
a. char arrays. b. int arrays. c. byte arrays. d. Strings.
Computer Science & Information Technology
____ are continuous waveforms.
A. Analog signals B. Application programs C. Digital signals D. System programs
Computer Science & Information Technology