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Computer Science

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Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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This is sample data from my JSON file: "firstName" : "Juan","middleName" : "Dela""lastName" : "Cruz","username" : "JuanDelaCruz","password" : "1234", I already have a JAVA GUI that displays the data of each user in a table format. I need the part of my program that will allow the server to either accept or reject the user. If the user is accepted, the credentials of the user will be saved in another JSON file. If rejected, the server will do nothing.
You used forbidden methods. See below. Please update without any of the following in the code. Forbidden Built-ins/Methods/etc break, continue methods outside those permitted within allowed types for instance str.endswith list.index, list.count, etc. Keywords you definitely don't need: await, as, assert, async, class, except, finally, global, lambda, nonlocal, raise, try, yield The is keyword is forbidden, not because it's necessarily bad, but because it doesn't behave as you might expect (it's not the same as ==). built in functions: any, all, breakpoint, callable, classmethod, compile, exec, delattr, divmod, enumerate, filter, map, max, min, isinstance, issubclass, iter, locals, oct, next, memoryview, property, repr, reversed, round, set, setattr, sorted, staticmethod, sum, super, type, vars, zip If you have read this section, then you know the secret word is: argumentative. exit() or quit() If something is not on the allowed list, not on this list, then it is probably…
Can some pretty please help with this HW problem?
Use ruby on rails and on command line. Add the following parts to your student management system. Prefix: prefix, has many courses. Course: Belongs to a prefix, number, name, has many sections. Semester: semester ("Spring", "Summer", "Fall", …), year, has many sections. Section: CRN, belongs to a course, belongs to a semester. Clean up the browser display for the following. Foreign keys are not displayed, but reasonable text is. There is a drop-downs for prefixes when creating courses, and drop-downs for course and semester when creating a section. A course displays all the sections. A semester displays all the sections. Something reasonable is displayed if a null is detected.
Scenario: You have been tasked with building a URL file validator for a web crawler. A web crawler is an application that fetches a web page, extracts the URLs present in that page, and then recursively fetches new pages using the extracted URLs. The end goal of a web crawler is to collect text data, images, or other resources present in order to validate resource URLs or hyperlinks on a page. URL validators can be useful to validate if the extracted URL is a valid resource to fetch. In this scenario, you will build a URL validator that checks for supported protocols and file types.
I have posted this multiple times and people keep giving me answers that don't correspond to the question or is unloadable. So please read this carefully. Answer the operand given below on the bottom left and the fill in its value that is on the bottom right. Please make it loadable before sending as previous tutors sent a black page and please answer what is being asked in the question !! Again bottom left is the operand and please fill in its value which is on the bottom right..
Your company is doing some data cleanup, and notices that the email list of all users has been getting outdated. For one, there are some users with repeat email addresses, and some of the email accounts no longer exist. Your job is to create a series of methods that can purge some of the old data from the existing email list. Create static methods in the DataPurge class that can do the following: removeDuplicates This method takes an email list, and removes the duplicate email values. It also prints to the console which duplicate emails have been removed. removeAOL This method removes all email addresses from a list that are from aol.com. It notifies the user which email addresses are being removed as well. containsOnlyEmails This method returns true if all of the data in the email list is actually an email address. We will define something as an email address if it contains the characters @ and . Test your methods out in the DataPurgeTester file. You don’t have to change anything…
To add a cookie, you use the method setCookie. One of the parameters to this method is the time after which the cookie is expired. This time is represented in Select one: O a. Minutes O b. Hours O c. Seconds O d. Milliseconds
kindly provide the R codes and ou tput
Buckets Buckets Buckets Using only the 1's digit, what is the correct bucket for 304? Ex: 5 using 1's digit using 10's digit using 100's digit what is the correct bucket for 97? 1 1 1 2 Using only the 10's digit, what is the correct bucket for 304? 4 4 4 what is the correct bucket for 97? 6. 6. Using only the 100's digit, 7 7 what is the correct bucket for 304? 8 8 8. what is the correct bucket for 97? 9. 9. 9.
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*with psuedo code First, launch NetBeans and close any previous projects that may be open (at the top menu go to File ==> Close All Projects). Then create a new Java application called "WeightedAvgDataAnalyzer" (without the quotation marks), that does the following: This program is similar to the previous assignment - "WeightedAvgDropSmallest" - with a major difference that the inputs for the program will be read from a file and the output for this assignment should be written to a new file. The concept of application is as follows: The program will read numbers from a file - data.txt - that you will create, where the weight is a double (greater than 0.0 and less than or equal to 1.0) and the other numbers are the number, n, of lowest values to drop and then the numbers to be averaged after dropping the lowest n values. Example data.txt file would display: 0.5 3 10 70 90 80 20 The program then calculates the weighted average of all those numbers except the lowest n numbers, where…