List three applications for hosted virtualization.
What will be an ideal response?
OS training, Software training, Application isolation, Network isolation, Software development, What-if scenarios, Use of legacy applications, Physical-to-virtual conversion.
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Suppose schema S has attributes A, B, and C. The attribute A uniquely determines B and C uniquely determines A. Suppose we decompose S into S1 and S2 such that S1 contains A and B, and S2 contains C and A.
(a) What are the keys of S, S1, and S2, respectively? (b) Does the decomposition remove redundancy? Why? (c) Is the decomposition lossless? Why? (d) Is the decomposition dependency-preserving? Why? (e) Does the decomposition lead to tables that are overall smaller? Why? (f) Does the decomposition lead to tables for which it is easier to guarantee the given integrity constraints? Why? (g) Does the decomposition lead to tables for which it is easier to write query operations? Why? (h) Does the decomposition lead to tables that enable faster query and update operations? Why?
To insert an item in an AVL tree, first we search the tree and find the place where the new item is to be inserted.
Answer the following statement true (T) or false (F)