Advanced SQL Which of the following is true concerning triggers? They have an event, condition, and action. They execute against only some applications that access a database. They cannot cascade (cause another trigger to fire). You do not create them with SQL. They have an event, condition, and action. They execute against only some applications that access a database. They cannot cascade (cause another trigger to fire). You do not create them with SQL. ANSWER DOWNLOAD EXAMIANS APP
Advanced SQL A transaction is the complete set of closely related update commands that must all be done, or none of them done, for the database to remain valid. True False True False ANSWER DOWNLOAD EXAMIANS APP
Advanced SQL A CASE SQL statement is which of the following? A way to establish a loop in SQL. All of these A way to establish an IF-THEN-ELSE in SQL. A way to establish a data definition in SQL. A way to establish a loop in SQL. All of these A way to establish an IF-THEN-ELSE in SQL. A way to establish a data definition in SQL. ANSWER DOWNLOAD EXAMIANS APP
Advanced SQL What type of join is needed when you wish to include rows that do not have matching values? Equi-join Natural join All of these Outer join Equi-join Natural join All of these Outer join ANSWER DOWNLOAD EXAMIANS APP
Advanced SQL The joining technique is useful when data from several relations are to be retrieved and displayed and the relationships are not necessarily nested. True False True False ANSWER DOWNLOAD EXAMIANS APP
Advanced SQL A UNION query is which of the following? Combines the output from multiple queries and does not include the same number of columns. Combines the output from no more than two queries and does not include the same number of columns. Combines the output from no more than two queries and must include the same number of columns. Combines the output from multiple queries and must include the same number of columns. Combines the output from multiple queries and does not include the same number of columns. Combines the output from no more than two queries and does not include the same number of columns. Combines the output from no more than two queries and must include the same number of columns. Combines the output from multiple queries and must include the same number of columns. ANSWER DOWNLOAD EXAMIANS APP
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