Concerning return statements that functions can have:
a) Value returning functions can have the statement
return computed_value;
b) void functions can have the statement return void;
c) void functions must have a return; statement, with no argument.
d) void functions may terminate using a return; statement without an argument,
or they may have no return statement at all, terminating by falling off the end
of the function block.
a) Value returning functions can have the statement
return computed_value;
d) void functions may terminate using a return; statement without an argument,
or they may have no return statement at all, terminating by falling off the end
of the function block.
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What is important to do to a SQLite database to release any resources obtained by the object so that unexpected errors do not occur in your application during use?
a. Shutdown the database by calling the release() method on the SQLiteOpenHelper object. b. End any queries by calling the endQuery() method on the SQLiteOpenHelper object. c. Stop the database by calling the stop() method on the SQLiteOpenHelper object. d. Close the database by calling the close() method on the SQLiteOpenHelper object.
Verify that selections commute—that is, for any relation r and any pair of selection conditions cond 1 and cond 2 , ? cond 1 (? cond 2 (r)) = ? cond 2 (? cond 1 (r)).
What will be an ideal response?