Consider the index information for the dept_emp table in the employee’s schema: Which two conclusions can be made based on the output of the query? (Choose two.)
A.
There are three indexes on the table.
B.
There is a redundant index on the dept_no column.
C.
The secondary indexes are optimized for unique key look-ups.
D.
The values on the emp_no column must be unique.
E.
The selectivity of the dept_no column is the best of the indexed columns.
F.
There is a redundant index on the emp_no column.
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h3clht
2 years, 1 month ago