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#3. Examine the list of variables and their data types: NAME DATA Type
TS, TS1 TIMESTAMP
TSZ TIMESTAMP WITH TIME ZONE
TLZ TIMESTAMP WITH LOCAL TIME ZONE
IYM INTERVAL YEAR TO MONTH
IDS, IDSI INTERVAL YEAR To SECOND Which three expressions using the new data and time data types are valid? (Choose three)
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#4. Consider the following statement:
SQL> EXECUTE DBMS_STATS.GATHER_SHEMA_STATS (- 2> ownname => ‘OE’, - 3> estimate_percent => DBMS_STATS.AUTO_SAMPLE_SIZE, - 4> method opt => ‘FOR ALL columns SIZE AUTO’);
What is the effect of ‘for all columns size AUTO’ of the METHOD_OPT option?
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gen. 0.074
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