Type of index for VarChar2

Hello

I have a number of varchar2 fields on my paintings. They are VarChar2 (2000) with an average length between 130 and 290 characters.
I would like to build the index for these fields to improve search performance.
It is on an instance of Oracle9.

Could you recommend a type of index for this field?

Thank you

Death :)

Pavan - a DBA wrote:
According to Oracle,.
If this column contains the low cardinality (less), you can create bitmap indexes
If this column contains the high cardinality (more), you can create the index b-tree (default index type)

It is not so simple.
Please read the following thread, it contains also some interesting links:
Re: index bitmap and distinct keys

Nicolas.

Tags: Database

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|   0 | SELECT STATEMENT             |                   |     1 |    46 |     3   (0)| 00:00:01 |
|   1 |  NESTED LOOPS                |                   |       |       |            |          |
|   2 |   NESTED LOOPS               |                   |     1 |    46 |     3   (0)| 00:00:01 |
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SQL>

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