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Question 1: What is the objective of a query simplifier? What are the idempotence rules used by query simplifier? Give an example to explain the concept.
Question 2: What are query transformation rules?
Question 3: Discuss the rules for transformation of query trees and identify when each rule should be applied during optimization.
Question 4: Discuss the main cost components for a cost function that is used to estimate query execution cost.
Question 5: What cost components are used most often as the basis for cost functions?
The report is divided into four main parts. The introduction about sample, hold amplifier and design, bootstrap switch design followed by simulation results.
The time delay of a long-distance call can be determined by multiplying a small fixed constant by the number of communication links on the telephone network between the caller and callee
Write code to implement the expression: A= (B+C) * (D+E) on 3-, 2-, 1- and 0- address machines. In accordance with programming language practice, computing the expression should not change the values of its operands. Show all instructions.
Determine the minimum number of nodes in tree to remove so that the tree is separated into subtrees of sizes at most k. Give the algorithm, the correctness proof and the time complexity.
Write the algorithm (described informally) which takes as input NPDA A and determines whether the language of A is nonempty.
Create a Java program that will search a text document of strings representing numbers of type int and will write the largest and the smallest numbers to screen.
Certain points along the road, so that every house is within four miles of one of the base stations. Give an efficient algorithm that achieves this goal using as few base stations as possible.
A very small college wishes to keep track of history of all administrative appointments, The college chancellor may wish to know how many deans worked in college of business between January 1, 1960 and January 1 2008
Take your current knowledge of Oracle Logs ect and project how a bank may make use of integrity control mechanisms.
You may describe your algorithm using pseudo-code, but you must describe youralgorithm in English. What is the time complexity of your algorithm?
Determine when a typical database is created the structure is constructed before the data is actually loaded into the database. What problems exist when someone wishes to add or delete from the existing structure?
Explain the process of insertion into a heap-implemented priority queue, and informally explain its complexity and the process of removal from a heap-implemented priority queue, and informally explain its complexity.
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