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Whiledesigningyourdatabase，youhavecreatedtheEMPLOYEEStableasanindex-organized（IOT）.YouwanttocreateabitmapindexontheJOD_IDcolumntomakequeriesfaster.Whichtaskmusthavebeencompletedsothatyouareabletocreatethebitmapindex？（）

A.Aprimarykeymusthavebeencreated.

B.Amappingtablemusthavebeencreated.

C.Anoverflowtablespacemusthavebeenspecified.

D.ThePCTTHRESHOLDoptionmusthavebeenspecified.

参考答案

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