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An index-organized table （IOT） called SPARSE has had many records deleted. Which command reorganizes the IOT so that the empty space is removed， while minimizing the impact for users？（）
- A、EXPORT with TABLES and IMPORT with the INDEX and IGNORE options.
- B、ALTER TABLE … COALESCE ；
- C、ALTER INDEX …REBUILD ONLINE；
- D、CREATE TABLE …AS SELECT_ONLINE；
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更多 “An index-organized table （IOT） called SPARSE has had many records deleted. Which command reorganizes the IOT so that the empty space is removed， while minimizing the impact for users？（）A、EXPORT with TABLES and IMPORT with the INDEX and IGNORE options.B、ALTER TABLE … COALESCE ；C、ALTER INDEX …REBUILD ONLINE；D、CREATE TABLE …AS SELECT_ONLINE；” 相关考题
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单选题In your test database， you have created the ORDERS table as an index-organized table （IOT）. To facilitate faster querying， you have created a mapping table and a bitmap index on the ORDER_FILLED column. You observe that the query performance degrades when users perform a large volume of transactions. While investigating the reason， you find that the mapping table segment is fragmented， leading to poor performance. Which option would you use to defragment the mapping table without affecting the original table data？（）A
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The table name is wrong.C
It is an index-Organized table （IOT）D
The table is stored in locally managedtablespace.E
The table is stored in atablespacewhere segment space is managed manually.
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Object tableC
External tableD
Clustered tableE
Global temporary tableF
Index-organized table （IOT）
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单选题In your test database， you have created the ORDERS table as an index-organized table （IOT）. To facilitate faster querying， you have created a mapping table and a bitmap index on the ORDER_FILLED column. You observe that the query performance degrees when users perform a large volume of transactions. While investigating the reason， you find that the mapping table segment is fragmented， leading to poor performance. Which option would you use to defragment the mapping table without affecting the original table data？（）A
Export and import the mapping table.B
Drop and re-create the mapping table.C
Truncate the mapping table and reinsert the values.D
Use the ALTER TABLE .. REBUILD command to defragment the mapping table.
考题
单选题While designing your database， you have created the EMPLOYEES table as an index/x7forganized table （IOT）. You want to create a bitmap index on the JOB_ID column to make queries faster. Which task must have been completed so that you are able to create the bitmap index？（）A
A primary key must have been created.B
A mapping table must have been created.C
An overflow tablespace must have been specified.D
The PCTTHRESHOLD option must have been specified.
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单选题You moved the index EMP_NO_INDX from one tablespace to another and then issued the following command to rebuild the index EMP_NO_INDX： SQL ALTER INDEX EMP_NO_INDX REBUILD ONLINE； Which table allows the users to access the EMP_NO_INDX index while performing the rebuild operation？（）A
Index-organized tableB
Mapping TableC
Clustered TableD
Journal Table
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单选题An index-organized table （IOT） called SPARSE has had many records deleted. Which command reorganizes the IOT so that the empty space is removed， while minimizing the impact for users？（）A
EXPORT with TABLES and IMPORT with the INDEX and IGNORE options.B
ALTER TABLE … COALESCE ；C
ALTER INDEX …REBUILD ONLINE；D
CREATE TABLE …AS SELECT_ONLINE；
考题
单选题In your test database， you have created the ORDERS table as an index/x7forganized table （IOT）. To facilitate faster querying， you have created a mapping table and a bitmap index on the ORDER_FILLED column. You observe that the query performance degrades when users perform a large volume of transactions. While investigating the reason， you find that the mapping table segment is fragmented， leading to poor performance. Which option would you use to defragment the mapping table without affecting the original table data？（）A
export and import the mapping tableB
drop and recreate the mapping tableC
truncate the mapping table and reinsert the valuesD
use the ALTER TABLE .. REBUILD command to defragment the mapping table
考题
单选题While designing your database， you have created the EMPLOYEES table as an index-organized table （IOT）. You want to create a bitmap index on the JOB_ID column to make queries faster. Which task must have been completed so that you are able to create the bitmap index？（）A
A primary key must have been created.B
A mapping table must have been created.C
An overflow tablespace must have been specified.D
The PCTTHRESHOLD option must have been specified.
考题
多选题Online index rebuild functionality has been extended to include which four index structures？（）ABitmap indexes.BReverse key indexes.CFunction-based indexes.DKey-compressed indexes on regular tables.EKey-compressed indexes on IOT （including secondary indexes）
考题
单选题While designing your database， you have created the EMPLOYEEStable as an index-organized （IOT）. You want to create a bitmap index on the JOD_IDcolumn to make queries faster. Which task must have been completed so that you are able to create the bitmap index？（）A
A primary key must have been created.B
A mapping table must have been created.C
An overflow tablespace must have been specified.D
The PCTTHRESHOLD option must have been specified.
考题
单选题While designing the database for one of your online transaction processing （OLTP） applications， you want to achieve the following： a） high availability of data b） faster primary key access to the table data c） compact storage for the table Which type of tables would you use to achieve these objectives？（）A
heap tablesB
object tablesC
partitioned tablesD
index-organized tables （IOTs）
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