Advanced SQL With the UNION clause, each query involved must output the same number of columns, and they must be UNION compatible. False True False True ANSWER DOWNLOAD EXAMIANS APP
Advanced SQL A function returns one value and has only output parameters. False True False True ANSWER DOWNLOAD EXAMIANS APP
Advanced SQL Which of the following statements is true concerning subqueries? All of these Does not start with the word SELECT. Involves the use of an inner and outer query. Cannot return the same result as a query that is not a subquery. All of these Does not start with the word SELECT. Involves the use of an inner and outer query. Cannot return the same result as a query that is not a subquery. 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 What type of join is needed when you wish to include rows that do not have matching values? All of these Natural join Outer join Equi-join All of these Natural join Outer join Equi-join ANSWER DOWNLOAD EXAMIANS APP
Advanced SQL Which of the following is true concerning triggers? They cannot cascade (cause another trigger to fire). They have an event, condition, and action. You do not create them with SQL. They execute against only some applications that access a database. They cannot cascade (cause another trigger to fire). They have an event, condition, and action. You do not create them with SQL. They execute against only some applications that access a database. ANSWER DOWNLOAD EXAMIANS APP
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