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 Which of the following is true concerning triggers? 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. They cannot cascade (cause another trigger to fire). 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 Which of the following is true concerning systems information in an RDBMS? RDBMS store database definition information in system-created tables. This information can be accessed using SQL. This information often cannot be updated by a user. All of these RDBMS store database definition information in system-created tables. This information can be accessed using SQL. This information often cannot be updated by a user. All of these ANSWER DOWNLOAD EXAMIANS APP
Advanced SQL The following SQL is which type of join: SELECT CUSTOMER_T. CUSTOMER_ID, ORDER_T. CUSTOMER_ID, NAME, ORDER_ID FROM CUSTOMER_T,ORDER_T ; Natural join Cartesian join Equi-join Outer join Natural join Cartesian join Equi-join Outer join ANSWER DOWNLOAD EXAMIANS APP
Advanced SQL Which of the following statements is true concerning subqueries? 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. All of these Does not start with the word SELECT. Involves the use of an inner and outer query. ANSWER DOWNLOAD EXAMIANS APP
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