Computers and Technology, 25.06.2020 03:01 levilugar
Write a class Student() such that it has an attribute 'score' (that is initialized with 10) and three methods: add_score(): adds 10 to the score decrease_score(): decreases score by 10 __str__(): returns the current score (should return a string) Example:
Answers: 2
Computers and Technology, 23.06.2019 10:20
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
Computers and Technology, 23.06.2019 14:30
The basic work area of the computer is it screen that you when you first fire up your computer
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Computers and Technology, 23.06.2019 14:30
Select the correct answer. what does it indicate when a website displays https instead of http? a. the website is secure. b. there is no secure sockets layer. c. the secure sockets layer is hidden. d. the website is not secure.
Answers: 1
Computers and Technology, 23.06.2019 23:30
Perform an online search about the booting process of a computer and list all the steps
Answers: 2
Write a class Student() such that it has an attribute 'score' (that is initialized with 10) and thre...
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