Computers and Technology, 09.01.2020 04:31 meganwintergirl
Eric has a new job as a front-end developer. he has a degree in web design. he knows programming languages such as html and css. ericâs company has taken on a new project that requires advanced technology for front-end development. which technology should eric learn to develop such advanced front-end designs?
a.
postgres
b.
flex
c.
ajax
d.
oracle
e.
firework
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
Eric has a new job as a front-end developer. he has a degree in web design. he knows programming lan...
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