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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.
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更多 “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.” 相关考题
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