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 The UNION clause is used to combine the output from multiple queries together into a single result table. True False True False ANSWER DOWNLOAD EXAMIANS APP
Advanced SQL Which of the following is one of the basic approaches for joining tables? Natural join All of these Subqueries Union Join Natural join All of these Subqueries Union 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 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 WHERE CUSTOMER_T. CUSTOMER_ID = ORDER_T. CUSTOMER_ID Equi-join Cartesian join Natural join Outer join Equi-join Cartesian join Natural join Outer join ANSWER DOWNLOAD EXAMIANS APP
Advanced SQL Outer join is the same as equi-join, except one of the duplicate columns is eliminated in the result table. True False True False ANSWER DOWNLOAD EXAMIANS APP
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