Which of the following is the shape of an action-state symbol?
a. Diamond.
b. Circle.
c. Rectangle with left and right sides replaced with arcs curving outward.
d. Rounded rectangle.
c. Rectangle with left and right sides replaced with arcs curving outward.
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What does compacting a database involve and why is this process needed?
What will be an ideal response?
Big O notation describes ________.
a. the amount of memory required by an algorithm. b. the difficulty of writing an algorithm to solve a specific problem. c. an algorithm’s efficiency in terms of the work required to solve a problem. d. the length of an algorithm for solving a specific problem.
Which of the following statements is false?
a. When you specify a slice and omit the starting index, 0 is assumed. So, the slice numbers[:6] is equivalent to the slice numbers[0:6]. If you omit the ending index, Python assumes the sequence’s length. b. Omitting both the start and end indices on a slice copies the entire sequence. c. Slices make deep copies of the sequence’s elements. d. With slices, the new sequence’s elements refer to the same objects as the original sequence’s elements, rather than to separate copies.
A DateTime variable stores hour values in the range .
a) 1 to 12 b) 0 to 12 c) 0 to 24 d) 0 to 23