Introduction to SQL What is a view? A view is a database diagram. A view is a special stored procedure executed when certain event occurs. None of these A view is a virtual table which results of executing a pre-compiled query. A view is not part of the physical database schema, while the regular tables are. A view is a database diagram. A view is a special stored procedure executed when certain event occurs. None of these A view is a virtual table which results of executing a pre-compiled query. A view is not part of the physical database schema, while the regular tables are. ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Each index consumes extra storage space and also requires overhead maintenance time whenever indexed data change value. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL SQL can be used to: All of these modify database data only. query database data only. create database structures only. All of these modify database data only. query database data only. create database structures only. ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL The SQL statement: SELECT Name, COUNT(*) FROM NAME_TABLE; counts the number of name rows and displays this total in a table with a single row and a single column. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Which of the following query finds the total rating of the sailors who have reserved boat "103"? SELECT SUM(s.rating) FROM sailors s, reserves r WHERE s.sid = r.sid AND r.bid = 103 c) SELECT COUNT(s.rating) FROM sailors s, reserves r WHERE s.sid = r.sid AND r.bid = 103 SELECT SUM(s.rating) FROM sailors s, reserves r AND r.bid = 103; SELECT s.rating FROM sailors s, reserves r WHERE s.sid = r.sid AND r.bid = 103 SELECT SUM(s.rating) FROM sailors s, reserves r WHERE s.sid = r.sid AND r.bid = 103 c) SELECT COUNT(s.rating) FROM sailors s, reserves r WHERE s.sid = r.sid AND r.bid = 103 SELECT SUM(s.rating) FROM sailors s, reserves r AND r.bid = 103; SELECT s.rating FROM sailors s, reserves r WHERE s.sid = r.sid AND r.bid = 103 ANSWER DOWNLOAD EXAMIANS APP
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
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