Question
FROM r
WHERE gender = ’f’ AND income level = ’L2’;
In this selection, we fetch the bitmaps for gender value f and the bitmap for income level value L2, and perform an ________ of the two bitmaps.
a.
Union
b.
Addition
c.
Combination
d.
Intersection
Posted under Indexing and Hashing DBMS
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Q. SELECT * FROM r WHERE gender = ’f’ AND income level = ’L2’; In this selection, we fetch the bitmaps for gender value f and the bitmap for income level value L2, and perform an...
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