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To identify the deleted records we use the ______________

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in Database Management by (119k points)
To identify the deleted records we use the ______________

(a) Existence bitmap

(b) Current bitmap

(c) Final bitmap

(d) Deleted bitmap

This question was posed to me during an internship interview.

My question is based upon Bitmap Indices in chapter Indexing and Hashing of Database Management

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Best answer
Right option is (a) Existence bitmap

To explain: The bitmaps which are deleted are denoted by 0.

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