Introduction to SQL Which operator performs pattern matching? None of these EXISTS operator LIKE operator BETWEEN operator None of these EXISTS operator LIKE operator BETWEEN operator ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL In SQL, which command(s) is(are) used to change a table's storage characteristics? MODIFY TABLE CHANGE TABLE ALTER TABLE All of these MODIFY TABLE CHANGE TABLE ALTER TABLE All of these ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Which of the following do you need to consider when you make a table in SQL? Primary keys Data types All of these Default values Primary keys Data types All of these Default values ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Indexes may be created or dropped at any time. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Which of the following query finds the name of the sailors who have reserved at least two boats? SELECT DISTINCT s.sname FROM sailors s, reserves r1, reserves r2 WHERE s.sid = r1.sid AND r1.sid = r2.sid AND r1.bid <> r2.bid SELECT DISTINCT s.sname FROM sailors s, reserves r1, reserves r2 WHERE s.sid = r1.sid AND r1.sid = r2.sid AND r1.bid ≠ r2.bid All of these SELECT DISTINCT s.sname FROM sailors s, reserves r1, reserves r2 WHERE s.sid = r1.sid AND COUNT(r1.bid) > r2.bid SELECT DISTINCT s.sname FROM sailors s, reserves r1, reserves r2 WHERE s.sid = r1.sid AND r1.sid = r2.sid AND r1.bid <> r2.bid SELECT DISTINCT s.sname FROM sailors s, reserves r1, reserves r2 WHERE s.sid = r1.sid AND r1.sid = r2.sid AND r1.bid ≠ r2.bid All of these SELECT DISTINCT s.sname FROM sailors s, reserves r1, reserves r2 WHERE s.sid = r1.sid AND COUNT(r1.bid) > r2.bid ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL NULL is the same as 0 for integer the same as 0 for integer and blank for character not a value the same as blank for character the same as 0 for integer the same as 0 for integer and blank for character not a value the same as blank for character ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS