Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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- C++ Here is the original question for what it is worth. Please do not give me an answer you found on Chegg. I have one of those accounts too. Please read carefully, I have submitted this question several times and no one could follow directtions. I have my code doing what is asked of the problem with the exception of displaying the last_name, first_name A teacher is requiring her students to line up in alphabetical order, according to their first names..For example, in one class Chapel, Christine would be at the front and Uhura, Nyota would be last. The program will get the names from a file using getline since the file name includes spaces. The names should be read in until there is no more data to read. The program should prompt the user for the file name and read the data from the file. Note that these names might include spaces; handle your input accordingly. The expected output is two names; do not show the entire file. Do not use arrays or sorting for this problem. Here is my…arrow_forwardA declared name is only valid within a region of code known as the name's scope. Example: A variable “globalVar_1” declared in main() is only valid within main(), from the declaration to main()'s end. True or falsearrow_forwardInstructions: For each Exercise below, write your code in an IDE and run your code within the IDE as well. Once you have satisfied the Exercise requirements, paste your code below under the corresponding. Exercise 1:The Magic 8-Ball is a super popular toy used for fortune-telling or seeking advice developed in the 1950s! Write a magic8.cpp program that will output a random fortune each time it executes. The answers inside a standard Magic 8-Ball are: ● It is certain ● ● ● . ● ● ● ● ● It is decidedly so Without a doubt Yes - definitely You may rely on it As I see it, yes Most likely Outlook good Yes Signs point to yes Reply hazy, try again Ask again later Better not tell you now Cannot predict now Concentrate and ask again Don't count on it My reply is no . My sources say no ● Outlook not so good ● Very doubtfularrow_forward
- in PERL programming: Consider the list (784,785,754,1035,776,775). Please extract from the list the numbers that ends to 5. Please use one statement.arrow_forwardPythonarrow_forwardPlease do in Java In many computer systems and networks,different users are granted different levels of access to different resources. In this case, you are given a int[] rights, indicating the privilege level of each user to use some system resource. You are also given a int minPermission, which is the minimum permission a user must have to use this resource. You are to return a String indicating which users can and cannot access this resource. Each character in the return value corresponds to the element of users with the same index. 'A' indicates the user is allowed access, while 'D' indicates the user is denied access. Constraints users will contain between 0 and 50 elements, inclusive. Each element of users will be between 0 and 100, inclusive. minPermission will be between 0 and 100, inclusive. Examples a) {0,1,2,3,4,5} 2 Returns: "DDAAAA" Here, the first two users don't have sufficient privileges, but the remainder do. b) {5,3,2,10,0} 20 Returns: "DDDDD"…arrow_forward
- Write a program that accomplishes these tasks in Javaarrow_forwardAs part of this assignment, the program that you will be writing will store current grades in a dictionary using course codes as keys and with values consisting of percent grades in lists. The main functions of this program are to print a student's gradebook, to drop the lowest grade in each course, print the student's gradebook again, drop the course with lowest average, and finally printing the student's gradebook again. This program requires a main function and a custom value-returning function. In the main function, code these basic steps in this sequence (intermediate steps may be missing): start with an empty dictionary that represents a gradebook and then use a while loop to allow the input of course codes from the keyboard. End the while loop when the user presses enter without entering data.within the while loop:for each course entered, use a list comprehension to generate five random integers in the range of 70 through 100. These random integers in a list represent the…arrow_forwardCreate a new C++ project in Visual Studio (or an IDE of your choice). Add the files listed below to your project: BinaryTree.h Download BinaryTree.h BinarySearchTree.h Download BinarySearchTree.h main.cpp Download main.cpp Build and run your project. The program should compile without any errors. Note that function main() creates a new BST of int and inserts the nodes 12, 38, 25, 5, 15, 8, 55 (in that order) and displays them using pre-order traversal. Verify that the insertions are done correctly. You may verify it manually or use the visualization tool at https://www.cs.usfca.edu/~galles/visualization/BST.html. (Links to an external site.) Do the following: 1. add code to test the deleteNode and search member functions. Save screenshot of your test program run. 2. add code to implement the nodeCount member function of class BinaryTree. Test it and save screenshot of your test program run. 3. add code to implement the leafCount member function of class BinaryTree. Test it and…arrow_forward
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