MC A foreign-key field value can appear________in its own table, but must appear________as the primary key of another table.
a) many times, at least once.
b) exactly once, many times.
c) many times, exactly once.
d) None of the above.
c) many times, exactly once.
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Use three separate single-line IF statements to assign the appropriate text to the variable answer depending upon the value of the variable x. The three possible texts are:
"The value of x is less than zero." "The value of x is equal to zero." "The value of x is greater than zero." Then combine the three into an IF statement with anther IF statement inside.
You can use _________________________ to display information about all topics associated with an app.
Fill in the blank(s) with the appropriate word(s).
Atari released its first product in 1975, an arcade game called ____.
A. Ping B. Tetris C. Pong D. Frogger
Which software enables multiple connections to the Internet to go through one protected computer?
A. Firewall B. Mail server C. Network D. Proxy server