In a materialized view, which of these refresh modes may be chosen as a performance-improving alternative?
A . AUTOMATIC
B . COMPLETE
C. FAST
D . MANUAL
E . DIFFERENTIAL
Explanation:
Answer C: The FAST refresh mode only sends individual changes to the target materialized view; this is usually significantly faster than a COMPLETE refresh, which resends all rows in the master table. Manual and automatic describe modes used to schedule the refresh jobs. DIFFERENTIAL is something I just made up.
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