peterigargan1370 peterigargan1370

24-04-2024
Computers and Technology

Answered

Which of the following is true?
a. Bit-mapped indexes are in general faster than B-tree indexes.
b. Bit-mapped indexes are only effective on high-selectivity columns.
c. Bit-mapped indexes are used exclusively on fact tables.
d. Bit-mapped indexes require less storage space and can be defined on larger number of columns.

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