what are indexes..how many types of index's are there and
what are they?
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Answer Posted / a.brahmam
indexes 5 tyeps
1.B-Tree index:-->in oracle by default index is called B tree index.
2.Bit map index:--->in oracle Bit map index is used to data warehouse applications generally Bit map index created low cardinality columns.
3.function based index:--->B tree index extension of the function based index.
in B tree indexes two type this are
4.Unique B tree index in oracle by default automatically created.
5.Non-Unique B tree index in oracle by default manually created.
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