Computers and Technology, 16.10.2020 09:01 jaelynnm
Identify the correct characteristics of Python numbers. Check all that apply.
1. Python numbers can be large integers.
2. Python numbers can be complex values such as 12B16cd.
3. Python numbers can be floating-point numbers.
4. Python numbers have numeric values.
5. Python numbers are created automatically.
Answers: 2
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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)?
Answers: 1
Identify the correct characteristics of Python numbers. Check all that apply.
1. Python numbers can...
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