Introduction to SQL Which SQL statement is used to delete data FROM a database? COLLAPSE ALTER DELETE REMOVE COLLAPSE ALTER DELETE REMOVE ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL When three or more AND and OR conditions are combined, it is easier to use the SQL keyword(s): IN only. Both IN and NOT IN. NOT IN only. LIKE only. IN only. Both IN and NOT IN. NOT IN only. LIKE only. ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL SQL is: a DBMS. an operating system. a data sublanguage. a programming language. a DBMS. an operating system. a data sublanguage. a programming language. 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 SELECT DISTINCT s.sname FROM sailors s, reserves r1, reserves r2 WHERE s.sid = r1.sid AND COUNT(r1.bid) > r2.bid All of these 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 SELECT DISTINCT s.sname FROM sailors s, reserves r1, reserves r2 WHERE s.sid = r1.sid AND COUNT(r1.bid) > r2.bid All of these ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Find all the tuples having temperature greater than 'Paris'. SELECT * FROM weather WHERE temperature > 'Paris' temperature SELECT * FROM weather WHERE temperature > (SELECT city FROM weather WHERE city = 'Paris') SELECT * FROM weather WHERE temperature > (SELECT temperature FROM weather WHERE city = 'Paris') SELECT * FROM weather WHERE temperature > (SELECT * FROM weather WHERE city = 'Paris') SELECT * FROM weather WHERE temperature > 'Paris' temperature SELECT * FROM weather WHERE temperature > (SELECT city FROM weather WHERE city = 'Paris') SELECT * FROM weather WHERE temperature > (SELECT temperature FROM weather WHERE city = 'Paris') SELECT * FROM weather WHERE temperature > (SELECT * FROM weather WHERE city = 'Paris') ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL ON UPDATE CASCADE ensures which of the following? Materialized Views Data Integrity Normalization All of these Materialized Views Data Integrity Normalization All of these ANSWER DOWNLOAD EXAMIANS APP
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