Which of the following is a good candidate for a primary key?
A) A student ID in a college registration database
B) A postal code in an address database
C) A car model in a Motor Vehicle Department database
D) A street name in an address database
A
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MC______ arguments may be passed to function range.
a) 3. b) 2. c) 1. d) All of the above.
Write a function numLines that takes as a parameter an open input stream referencing a text file and returns as the function value the number of lines of text in the file. You may assume that the last character in the file is the newline character.
What will be an ideal response?
A table, Abc, has attributes A, B ,and C , and a functional dependency A ? BC .Write an SQL CREATE ASSERTION statement that prevents a violation of this functional dependency.
What will be an ideal response?
A primary advantage of the ability to reference data in multiple workbooks is that you can access data at its source in its original location
Indicate whether the statement is true or false.