Bitmaps can be combined with regular B+-tree indices for relations where a few attribute values are extremely common, and other values also occur, but much less frequently.
A. Bitmap, B-tree
B. Bitmap, B+tree
C. B-tree, Bitmap
D. B+tree, Bitmap
Answer:A
Bitmaps can be combined with regular B+-tree indices for relations where a few attribute values are extremely common, and other values also occur, but much less frequently.
A. Bitmap, B-tree B. Bitmap, B+tree C. B-tree, Bitmap D. B+tree, Bitmap
Explanation: Bitmaps are combined and stored in a B+ tree.