The binary search algorithm knows that it has checked all possible locations when begin becomes ____ end.

Show that step 2 of the method used in Section 16.3.1 to perform a join using a semi- join does in fact generate the semi-join. For simplicity, assume that the join we are attempting is a natural join. That is, prove that ?attributes(T1) (T1 T2) = ?attributes(T1)(T1 ?attributes(join-condition)(T2))

What will be an ideal response?

The ____ for a purchase marks the start of the secure procurement process.

A. informal justification B. formal justification C. informal resolution D. formal resolution