Question:Which of the following statements are correct for rebuilding an index? 

A The resulting index may contain deleted entries 
B A new index is built using an existing index as the data source 
C Queries cannot use the existing index while the new index is being built 
D During a rebuild, sufficient space is needed to accommodate both the old and new indexes in their respective tablespaces 

+ Answer
D 

+ Explanation
not sure

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Md. Habib Ullah

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