Construct a bitmap index for the attributes Brand and Color for this table

Construct a bitmap index for the attributes Brand and Color for this table

Problems

Q 1. Consider the following relation Cars:

Brand Type Color Risk
Suzuki Alto Silver Medium
Suzuki Mehran Red High
Toyota Crown Black Low
Toyota Corolla Red Medium
Honda Accord Silver Low
Honda Civic Black Low
BMW A Black Low

I. Construct a bitmap index for the attributes Brand and Color for this table.

II. Indicate how these two bitmap-indices can be used to answer the query:

Give the total number of red Toyota cars with a medium risk score”.