Spatial resolution (Pixel Size) is currently 100m x 100m. If I want to increase the resolution to 50m x 50m, how many values should I store? (Assuming each current pixel is stored by 3 x, y and attribute values)

What are three software programs for mobile computing?

Suppose there is a relation r(a, b, c) with a b+-tree index with search keys (a, b).1. what is the worst-case cost of finding records satisfying 10 < a < 50 using this index, in terms of the number of records n1, retrieved and the height h of the tree? 2. what is the worst-case cost of finding records satisfying 10 < a < 50 and 5 < b < 10 using this index, in terms of the number of records n2 that satisfy this selection, as well as n1 and h defined above? 3. under what conditions on n1 and n2, would the index be an efficient way of finding records satisfying the condition from part (2)?

Has anyone seen my grandma shes been gone for 4 years already