What are the set operators union, union all, minus & intersect meant to do?
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How many memory layers are in the oracle shared pool?
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What is a read only transaction in oracle?
SQLERRM is a a. Constraint b. Pre Defined Exception c. Pseduocolumn d. Constant e. None of Above.
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How to restrict the duplicate records in table valuesets
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i have a question here... As of my knowledge, when we apply an index (b-tree)on a column, internally it arranges the data in b-tree format and do the fetching process correspondingly... and my quetion is... How a bit-map index arranges the data internally when applied on a column?IS it in b-tree format or whatelse?
How to test null values?
Explain the use of file option in exp command.