For the object below, Object.keys (employee) wouldreturn an array containing how many elements?}Oconst employee = {name: "Joe",8department: "Sales",emergencyContact: {name: "Jean",contact Info: {}O I don't knowphone: 212-555-2151',email: jeanx@gmail.com'},salary: 65000

In this question we have to find the return start length from the Object.keys method on the JSON…

For the object below, Object.keys(employee) would return an array containing how many elements? } const employee = { name: "Joe", 06 00 04 department: "Sales", emergencyContact: { name: "Jean", contact Info: { }, } O I don't know phone: 212-555-2151', email: jeanx@gmail.com' salary: 65000

For the object below, Object.keys(employee) would return an array containing how many elements? } const employee = { name: "Joe", 06 00 04 department: "Sales", emergencyContact: { name: "Jean", contact Info: { }, } O I don't know phone: 212-555-2151', email: jeanx@gmail.com' salary: 65000

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

See similar textbooks

Similar questions

StockList Class • This class will contain the methods necessary to display various information about the stock data. • This class shall be a subclass of ArrayList. • This class shall not contain any data fields. (You don't need them for this class if done correctly). • This class shall have a default constructor with no parameters. o No other constructors are allowed. • This class shall have the following public, non-static, methods: • printAllStocks: This method shall take no parameters and return nothing. ▪ This method should print each stock in the StockList to an output file. ▪ NOTE: This method shall NOT print the data to the console. The output file shall be called all_stock_data.txt. The data should be printed in a nice and easy to read format. o displayFirstTenStocks: This method shall take no parameters and return nothing. ▪ This method should display only the first 10 stocks in the StockList in a nice and easy to read format. ▪ This method should display the data in the…
Create a class called Array for performing a float one dimensional array. Define all the necessary variables to represent the private part. Provide a constructor that enables an object of this class to be initialized when it's declared. The constructor should contain default size in case no initializers are provided which is 10. Provide a proper destructor. Provide public methods that perform each of the following tasks: Set the array values (Set). This function sets the array elements with a specific location. Get the array values (Get). This function returns the array element with a specific location. Function called Max to get the maximum element of the array. Write a program to test your class. Define an object (array) with size 20 and another object with the default value. Fill the two arrays with values. Find the maximum number of the first array . Using language c++
Objects and Pointers Write code to instantiate/create two Bicycle objects: a default object (my_bike) and a non-default object (sister_bike). For the non-default object you may hard-code (or make up) the required parameters (brand, price and wheel size). No console input is needed.
Write a program that will contain an array of person class objects. The program should include two classes: 1) One class will be the person class. 2) The second class will be the team class, which contain the main method and the array or array list. The person class should include the following data fields; Name Phone number Birth Date Jersey Number Be sure to include get and set methods for each data field.The team class should contain the data fields for the team, such as: Team name Coach name Conference name The program should include the following functionality. Add person objects to the array; Find a specific person object in the array; (find a person using any data field you choose such as name or jersey number) Output the contents of the array, including all data fields of each person object. (display roster)
Write Xojo Code to create the array Planets and Assign values. Planets: Venus Earth Mars Jupiter Saturn Uranus Neptune
$cars = array( "car1" => array("make" => "Toyota","colour" => "Green","year" => 1999,"engine_cc" => 1998), "car2" => array("make" => "BMW","colour" => "RED","year" => 2005,"engine_cc" => 2400), "car3" => array("make" => "Renault","colour" => "White","vear" => 1993,"engine_c" => 1395) ); • Consider the a bove array, write a web application to Search the array about inputted made car if there is print the related information in tabular format wwww w www • Create a multidimensional array $PreArab that present the Arab countries and there presidents. Then print the contents in ascending order and the another time in descending order
The coins used for the change are the following: [500, 200, 100, 50, 20, 10] The return value is an object with 2 properties: product: the product name that the user selected. change: an array of coins (can be empty, must be sorted in descending order). Examples vendingMachine (products, 200, 7) → { product: "Crackers", change: [ 50, 20, 10 ] } vendingMachine (products, 500, 0) → "Enter a valid product number" IN Java Script Programming language
The coins used for the change are the following: [500, 200, 100, 50, 20, 10] The return value is an object with 2 properties: product: the product name that the user selected. change: an array of coins (can be empty, must be sorted in descending order). Examples vendingMachine (products, 200, 7) → { product: "Crackers", change: [ 50, 20, 10 ] } vendingMachine (products, 500, 0) → "Enter a valid product number" IN Java Script Programming language
Procedure: Develop an extension of structure.Vector, called MyVector, that includes a new method, sort. Here are some steps toward implementing this new class: 1. Create a new class, MyVector, which is declared to be an extension of the structure.Vector class. You should write a default constructor for this class that simply calls super();. This will force the structure.Vector constructor to be called. This, in turn, will initialize the protected fields of the Vector class. 2. Construct a new Vector method called sort. It should have the following declaration: public void sort(Comparator c) // pre: c is a valid comparator // post: sorts this vector in order determined by c This method uses a Comparator type object to actually perform a sort of the values in MyVector. You may use any sort that you like. 3. Write an application that reads in a data file with several fields, and, depending
This class will allow a user to enter 5 scores into an array. It will then rearrange the datain descending order and calculate the mean for the data set.Attributes: data[]— the array which will contain the scores mean — the arithmetic average of the scoresMethods: Average — the constructor. It will allocate memory for the array. Use a forloop to repeatedly display a prompt for the user which should indicate that userCopyright © 2019 Pearson Education, Inc., Hoboken NJshould enter score number 1, score number 2, etc. Note: The computer startscounting with 0, but people start counting with 1, and your prompt should accountfor this. For example, when the user enters score number 1, it will be stored inindexed variable 0. The constructor will then call the selectionSort and thecalculateMean methods. calculateMean — this is a method that uses a for loop to access each scorein the array and add it to a running total. The total divided by the number ofscores (use the length of the array),…
Book Donation App Create a book-app directory. The app can be used to manage book donations and track donors and books. The catalog is implemented using the following classes: 1. The app should have donors-repo.js to maintain the list of donors and allow adding, updating, and deleting donors. The donor object has donorID, firstName, lastName, and email properties. This module should implement the following functions: • getDonor(donorId): returns a donor by id. • addDonor(donor): adds a donor to the list of donors; donorID should be autoassigned a random number. • updateDonor(donor): updates the donor having the matching donorID. • deleteDonor(donorID): delete the donor with donorID from the list of donors, only if they are not associated with any books. 2. The app should have books-repo.js to maintain the list of donated books and allow adding, updating, and deleting books. The book object has bookID, title, authors, and donorID properties. • donorID references the book’s donor. This…
Write the code in java. Write code for PersonManagement class. This class contains the array of Person class (code is given below) and also following methods: 1. set: This method receives the array of person class and set the attribute. 2. displayAll: This method will display values of all persons. 3. sort: This method will sort the array according to age values of the persons with ascending order using Selection Sort. 4. reverse: This method will reverse the order of the array. 5. getPersons: This method will return the array of the persons (attribute). 6. displayEvenAgePerson: This method will display all those persons values who have even age. 7. displayOddAgePerson: This method will display all those persons values who have odd age. 8. displayPrimeAgePerson: This method will display only those persons values who have prime number age. Following is the class of Person: public class Person { private String Name; public int age; public void set(String Name, int age) { this.Name =…