BDBXML query and index

Hi ,
I have some problems in using BDBXML:
1 how the indexes are stored in BDBXML? are they stored in B+ tree? How to encode the indexes? Does it use interzone code?
2 the documents in BDB XML are also stored in B+ tree? How to encode the nodes which are in the document?Does it also use interzone code?
3 when using query shell to get datas ,how to use indexes to improve the speed of query? which step happens to use indexes in query shell?
Thanks!
Best Wishes!
May

I do not understand what you mean by encode and interzone code. I will try to answer the rest of your questions.
1 B-trees are used to store the indexes.
2 B-trees are used to store the XML data.
3 What query commands use the indexes depends on what indexes have been added to the container and what the query is. After adding indexes and data to the container use the dbxml shell command "queryPlan" to get a print out of what steps are performed to execute the query, including what indexes are used. If no indexes are used try adding indexes on the data your query accesses, or try altering your query to use the existing indexes (for example //b_node may make better use of an index than /a_node/b_node).
Lauren Foutz

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user10441616 wrote:
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SQL> DELETE
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|   0 | DELETE STATEMENT        |                       |    50 | 2650 |       |   573K (1)| 01:54:40 |
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>
>
Oracle 11.2 on Linux.
SQL> DELETE
2 FROM TABLEA APE
3        WHERE   NOT EXISTS
4                   (SELECT   1
5                      FROM   TABLEB AP
6                     WHERE       AP.col1 = APE.col1
7                             AND AP.col2 = APE.col2
8                             AND AP.col3 = APE.col3)
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Plan hash value: 1740911877
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|   0 | DELETE STATEMENT        |                       |    50 | 2650 |       |   573K (1)| 01:54:40 |
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|   5 |     TABLE ACCESS FULL   | TABLEA                |    80M| 1991M|       |   243K (1)| 00:48:42 |
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How I can make Oracle do
1) Read TABLEA row-by-row
2) for each row, check if it exists in TABLEB
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Regards
Jonathan Lewis
http://jonathanlewis.wordpress.com
Author: <b><em>Oracle Core</em></b>

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regards and thanks?

hi,
check this query below
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