Which of the following clauses can be included in SELECT to fetch 10 records only? (Check all that apply)

To speed up searches in tables we can?

Consider two tables A and B,  having only one column each and having these values:

A = [0, 1, 2, 3, 4, 5]

B = [5, 6, 7, 8, 9, 10]

The result of the UNION ALL operator on these tables will be?

Which of the following is not a DDL Command?

Which of the following is not a DDL command?

Which is the only proven way to prevent SQL Injection

Which of the following statements about indexes is NOT correct?

If you INNER JOIN tableA (which has 10 rows) with tableB (which has 5 rows), what is the smallest possible amount of rows that can be returned?

Which is the lowest isolation level to ensure dirty reads can not happen

Which of the following is a valid isolation level?