Do indices change, when data of table changes?

Hello,
if a table has got many indices and is changed frequently, do the indices change as well. Are all indices corresponding to that table changed. Are these indices processed in any way?
thanks, resi

"in indexes, the space can be reused only by rows with the same key-filed"
That is incorrect. The space left in a index by a deleted row can be used by any key that is between the prior and next keys. For example, if you have Index entries
Entry 1 Ball
Entry 2 Bell
Entry 3 BollNow, you delete Bell, the inndex would look like:
Entry 1 Ball
Entry 2
Entry 3 BollNow, add Bill, and the index would look like:
Entry 1 Ball
Entry 2 Bill
Entry 3 Bollno wasted space.
Rebuilding indexes is a waste of time and resources in the vast majority of cases.
Search Tom Kyte's site here for rebuilding indexes or reorganizong indexes for many, often lively, discussions.
John

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Hi
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Cory K

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Do indices change, when data of table changes?

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