Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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The rawDataStr has an error.
Please help me use regEx in Parse(). It useful for parsing the CSV files.
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- This table shows a page reference string 1, 2, 3, 1, 4, 5, 3, 6, 7, 2, 2, 1, 7, 6, 5, 7, 4, 7, 1 and the corresponding frame allocations. Use this for questions 10,11,12,13. There are 4 frames of memory. Please copy and complete the allocations. For each frame which maintains the same page as in the previous step please enter"=" The first 5 columns have been filled in. 1|2|31|4|5|36|7 221765 7 4 7 1 1. 1 2. 2 3 4 Show the table if the page replacement algorithm is FIFO - First In First Out. Show the table if the page replacement algorithm is optimal.arrow_forward13 Problem 1B In this problem we want to do an "in-place" sorting, that is, given an unsorted array, sort the array directly, by swapping elements on the array, without using and returning another array. Here is the main idea: first scan through the original input array from index 0 to the end, finding the smallest element. This element should be the first element of the sorted array. To make it the first element of the array, the algorithm swaps the smallest element with the element at index 0. Now, subarray at index 0 is considered the sorted array, and the rest is unsorted. Next, scan through the unsorted part of the array, from index 1 to the end, finding the smallest element in the range. Then make it the 2nd element of the array by swapping it with the element at index 1. Now subarray at index 0 and index 1 are sorted, and the rest are unsorted. Next, scan through the unsorted part of the part of the array from index 2 to the end, finding the smallest element and put it as the…arrow_forwardQ2) part 1 -Several types of correlation coefficients exist. Go to the help of the cor() function and find which correlation coefficient is calculated by default.-Add the appropriate argument to the cor() function in the previous command so that the Spearman correlation is calculated instead. part 2 -What is the maximum value of weight in the entire dataset?-How many missing values are there for age?-What is the mean value for BMIpre for the two surgical techniques (variable surgery)?-What is the Pearson correlation between the BMI before the operation (BMIpre) and the BMI after the operation (BMIpost)?arrow_forward
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