Introduction to SQL Which SQL keyword is used to retrieve only unique values? DIFFERENT DISTINCT UNIQUE DISTINCTIVE DIFFERENT DISTINCT UNIQUE DISTINCTIVE ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Which operator performs pattern matching? None of these LIKE operator EXISTS operator BETWEEN operator None of these LIKE operator EXISTS operator BETWEEN operator ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Indexes can usually be created for both primary and secondary keys. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL If you are going to use a combination of three or more AND and OR conditions, it is often easier to use the NOT and NOT IN operators. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Which of the following query finds the names of the sailors who have reserved at least one boat? SELECT DISTINCT s.sname FROM sailors s, reserves r WHERE s.sid = r.sid; None of These SELECT s.sname FROM sailors s, reserves r WHERE s.sid = r.sid; SELECT DISTINCT s.sname FROM sailors, reserves WHERE s.sid = r.sid; SELECT DISTINCT s.sname FROM sailors s, reserves r WHERE s.sid = r.sid; None of These SELECT s.sname FROM sailors s, reserves r WHERE s.sid = r.sid; SELECT DISTINCT s.sname FROM sailors, reserves WHERE s.sid = r.sid; ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL The SQL keyword BETWEEN is used: None of these to limit the columns displayed. as a wildcard. for ranges. None of these to limit the columns displayed. as a wildcard. for ranges. ANSWER DOWNLOAD EXAMIANS APP
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