You want to capture column group usage and gather extended statistics for better
cardinality estimates for the customers table in the SH schema. Examine the following
steps: 1. Issue the SELECTDBMS_STATS. CREATE_EXTENDED_STATS(‘SH’,
‘CUSTOMERS’)from dual statement. 2.Execute the dbms_stats.seed_col_usage
(null,‘SH’,500) procedure. 3.Execute the required queries on the customers table. 4.Issue
the select dbms_stats.reportwcol_usage(‘SH’, ‘customers’) from dual statement. Identify the
correct sequence of steps.
A.
3, 2, 1, 4
B.
2, 3, 4, 1
C.
4, 1, 3, 2
D.
3, 2, 4, 1
B
B