Identify a true statement about drill-down analysis.
a. It involves the interactive examination of high-level summary data in increasing detail to gain insight into certain elements.
b. It involves pre-aggregation of detailed data into useful data summaries in anticipation of questions that might be raised.
c. It performs operation on data based on user-defined formulas.
d. It is used to explore large amounts of data for hidden patterns to predict future trends and behaviors for use in decision making.
a. It involves the interactive examination of high-level summary data in increasing detail to gain insight into certain elements.
Drill-down analysis is a powerful tool that enables decision makers to gain insight into the details of business data to better understand why something happened. It involves the interactive examination of high-level summary data in increasing detail to gain insight into certain elements.
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Answer the following statements true (T) or false (F)
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Suppose this is embedded in an otherwise correct and complete program. Which version of f() will be called?
Suppose class D is derived from class B, and class B has a public member function whose declaration is void f();. Suppose class D has its version of the function, void f(). Here is a pointer definition and an access to a member function.. ``` B* bPtr = new D; BPtr->f(); ``` a) D::f() b) B::f() c) This is illegal. You can’t assign a D object to a variable of type pointer to B.
Modify the program of Fig. 29.17 to save information sent to the server into a text file.
What will be an ideal response?
char[][] table = new char[10][5];What is the value of table[2].length?
A. 0 B. 5 C. 10 D. 15