The default sort order in a sorted query is _________.
a. ascending
b. descending
c. natural
d. None of the above
a. ascending
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State which of the following schedules are serializable.
a. r1(x) r2(y) r1(z ) r3(z ) r2(x) r1(y) b. r1(x) w2(y) r1(z ) r3(z ) w2(x) r1(y) c. r1(x) w2(y) r1(z ) r3(z ) w1(x) r2(y) d. r1(x) r2(y) r1(z ) r3(z ) w1(x) w2(y) e. r1(x) r2(y) w2(x) w3(x) w3(y) r1(y) f. w1(x) r2(y) r1(z ) r3(z ) r1(x) w2(y) g. r1(z ) w2(x) r2(z ) r2(y) w1(x) w3(z ) w1(y) r3(x)
What output is sent to the file out.dat by the following code, assuming these lines of code are embedded in a correct program?
What will be an ideal response? ``` ofstream fout; fout.open("out.dat"); fout << "*" << setw(5) << 123 << "*" << 123 << "*" << endl; fout.setf(ios::showpos); fout << "*" << setw(5) <<; 123 << "*" << 123 << "*" << endl; fout.unsetf(ios::showpos): fout.setf(ios::left); fout << "*" << setw(5) << 123 << "*" << setw(5) << 123 << "*" << endl; ```
What is the purpose of a keepalive packet?
What will be an ideal response?
Useful data is when information is converted into a meaningful format
Indicate whether the statement is true or false