____________________ reads a small number of blocks in a table to make a best guess at the statistical picture of data in a table.
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Q60: _ in SQL*Plus displays a query plan
Q61: Database performance views are also known as
Q62: The DBMS_STATS package is the Oracle recommended
Q63: Generally,_ statistics record the number of rows
Q64: A(n)_ is where two interdependent rows are
Q66: Lock _ that require manual resolution are
Q67: Just like STATSPACK,the _ uses multiple snapshots
Q68: The reason for a deadlock is that
Q69: AWR stands for _.
Q70: Dynamic _ can be a good substitute
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