____ is defined as the speed or rate with which the DBMS supplies information to the user.
A. Data optimization
B. Database performance
C. Database tuning
D. Data analysis
Answer: B
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Which of the following statements is false?
a. You can use del to remove the element at any valid index or the element(s) from any valid slice. b. The following code creates a list, then uses del to remove its last element: numbers = list(range(0, 10)) del numbers[1] c. The following deletes the list’s first two elements: del numbers[0:2] d. The following uses a step in the slice to delete every other element from the entire list: del numbers[::2]
Without the repetition structure, if you needed an instruction to repeat 20 times you would have to write that instructions 20 times in your program.
Answer the following statement true (T) or false (F)
Dual core chips have two separate CPU units that share processing tasks
Indicate whether the statement is true or false
Solid-state storage devices are different than hard disks in that they ________.
A. have no moving parts B. are volatile C. have a higher capacity D. have slower access speed