Introduction to SQL ON UPDATE CASCADE ensures which of the following? Normalization All of these Data Integrity Materialized Views Normalization All of these Data Integrity Materialized Views ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Which of the following command makes the updates performed by the transaction permanent in the database? COMMIT TRUNCATE ROLLBACK DELETE COMMIT TRUNCATE ROLLBACK DELETE ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL SQL is a programming language. True False True False 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 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 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 ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL If a query involves NOT, AND, OR with no parenthesis The order of occurrence determines the order of evaluation. NOT will be evaluated first; OR will be evaluated second; AND will be evaluated last. NOT will be evaluated first; AND will be evaluated second; OR will be evaluated last. AND will be evaluated first; OR will be evaluated second; NOT will be evaluated last. The order of occurrence determines the order of evaluation. NOT will be evaluated first; OR will be evaluated second; AND will be evaluated last. NOT will be evaluated first; AND will be evaluated second; OR will be evaluated last. AND will be evaluated first; OR will be evaluated second; NOT will be evaluated last. ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL The result of every SQL query is a table. True False True False ANSWER DOWNLOAD EXAMIANS APP
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