Question 20. What is always the first field of a MongoDB document? Answer: a) id b) Ob_id c) _id d) ID_

Q: Create a Java program that asks the user to enter three (3) first names then display the following 1...

A: The program is written in Java. Check the program screenshot for the correct indentation. Please che...

Q: What is distributed data processing, and how does it work?

A: Defined distributed data processing, and it works

Q: Create a hybrid merge-join version for the situation when both relations are not physically sorted b...

A: Introduction: Forgiven relations r and s, merge joins produce natural joins an equijoin.  The Merge ...

Q: What makes you think that translated programmes run faster than interpreted programmes?

A: Program compilation is generally more efficient then interpretation because the process of compiling...

Q: What exactly is input injection, and what are the various methods for performing it?

A: the answer is given below:-

Q: What does the term "web services provisioning" mean?

A: Introduction: Provisioning Online Services (PWS) provides an online interface for provisioning that ...

Q: Provide me with the Matlab code to swap the second and third rows of the matrix given below, m = 987...

A: Matlab code to interchange last row and second last row.

Q: Q2:Write a row-level trigger that executes before updating a project's location in the project table...

A: The question is to write the SQL query for the given problem.

Q: Define interrelation constraint and give one example of such a constraint. How are interrelation con...

A: A constraint is defined as a condition that is applied to a certain statement and needs to be follow...

Q: Explain how headers are inserted as a data packet goes from the lower to the top levels.

A: Answer :  Given Data - How headers are inserted as a data packet goes from the lower to the top leve...

Q: What what is Failover-Clustering, and why do you believe it is so popular?

A: Introduction: A failover cluster is a collection of autonomous computers that collaborate to improve...

Q: Discuss security threats to databases and their respective countermeasures

A: Defined the security threats to databasesand their respective countermeasures

Q: Create a Java program that asks the user to enter three (3) first names then display the following 1...

A: The following code solves the above problem:

Q: What is the definition of deploying Web services?

A: Introduction: The deployment of web services:

Q: Write a JAVA program in which the user enters the initial velocity u, time of travel t, and the acce...

A: Required:- Write a JAVA program in which the user enters the initial velocity u, time of travel t, a...

Q: Use the Internet to locate three freeware programs that will enhance your life. In a write-up of you...

A: Use the Internet to locate three freeware programs that will enhance your life. In a write-up of you...

Q: Write a C# program to double the size of an image using the following sinc function.

A: Source Code: using System;class evenNumbers {  static void Main() {    int number, evenCount = 0, su...

Q: s may contain a lot of properties in certain applications, with the majority of them being null. Is ...

A: Lets see the solution.

Q: Which kind of parallelism (data or control) is optimal for SIMD? What kind of parallelism does MIMD ...

A: Introduction: Program-level parallelism is decentralizing a single program and running it on several...

Q: Early to bed is a good habit. The underlined phrase is an example of ans. none of these adverb phras...

A: Answer the above questions are as follows:

Q: You have been tasked to set up a 10GBASE-T standard Fast Ethernet for JJ Mills Corporation. While do...

A: According to the information given:- We have to choose the correct option to satisfy the statement m...

Q: Statistics are often calculated with varying amounts of input data. Write a program that takes any n...

A: Introduction: Here we are required to print the average and max of the elements in the array which n...

Q: why do we need so many distinct sorting methods?

A: Introduction: Here we are required to explain that we do we need so many distinct sorting methods.

Q: Car's state is set to hold the speed of travel and distance to travel at that speed Precondition: no...

A: Code : Car.java package Vehicle; import java.text.DecimalFormat;import java.util.Random; public cl...

Q: e) Find the moment of inertia of a hollow cylinder about the axis of the cylinder using a JAVA progr...

A: Moment of inertia of a hollow cylinder that is rotating on an axis passing through the centre of the...

Q: Explain why it is important that software products are developed and delivered quickly ?

A:

Q: In relational database storage, what are the pros and drawbacks of the following options? Keep each ...

A: In relational database storage, what are the pros and drawbacks of the following options? Keep each ...

Q: Create a Java program that asks the user to enter three (3) first names then display the following 1...

A: Explanation Here I have first of all created a string array one to store the 3 different names and...

Q: In a royal casino, there is a lottery at 134 number card. If a person is playing that game, find the...

A: Required:- In a royal casino, there is a lottery at 134 number card.If a person is playing that game...

Q: Create a program that allows you to view and edit the sales amounts for each month of the current ye...

A: The program should peruse the text record named monthly_sales.txt. Thetext document comprises of col...

Q: What will be the output of the following program? #include   void main ()   {       int a[10] = {...

A: Step 1  The answer is given in the below step

Q: temperature in Fahrenheit from the degree celsius which is entered by user in php

A: The code is given below

Q: rdt3.0] Now suppose that the network with a data rate of R b/s can deliver out of order and that the...

A: what is rdt3.0   Reliable data transfer 3.0---------Channels with Errors and Loss   Approach: sender...

Q: Write a python program to find the potentia energy using the total energy & kinetic energy. All the ...

A: The python code is given below

Q: Which of the process scheduling policies/algorithms in the operating system is superior, and why?

A: Best Scheduling Algorithm: The Round Robin scheduling technique outperforms FCFS (First Come First S...

Q: Describe the whole process of developing and deploying a database.

A: Intro: Describe the whole process of developing and deploying a database.    

Q: Five Star Retro Video rents VHS tapes and DVDS to the same connoisseurs who like to buy LP record al...

A: Below is the code screenshot and output:  

Q: Which fibre is utilised to protect the inner core and prevent the cable from straining in fiber-opti...

A: A fiber optic cable is a network cable designed for long-distance telecommunications. It is composed...

Q: Remove all errors from the C++ program given below asap #include using namespace std; int main(){ in...

A: Updated code for the given C++ Code  #include <bits/stdc++.h> using namespace std; int main() ...

Q: When you use inheritance, why do you need to make the destructor of the base class virtual? Explain ...

A: the answer is given below:-

Q: Consider the following P = {P1, P2, P3, P4, P5) R = (R1, R2, R3, R4} E = (P3 R1, P2 R2, R4 P4, R2 P1...

A: Below is the resource allocation graph

Q: Which VLAN is intended to provide administrative access to network devices?

A: The Answer and detailed explanation are provided below. Please check.

Q: What is the shape of np.sum(x, axis=(@, 1)) ? O (5, 6) O (6, 8) O (8, 10) O A single number is retur...

A: 3) The axis i in np.sum(a, axis=i) is the ith index of the shape of that array (zero-indexed). Let's...

Q: Question 2: Recurrences (a) Below is the pseudo-code for two algorithms: Practicel(A,s,f) and Practi...

A: For algorithm 1 From the above pseudo code we have The worst case time complexity will be ( T(0)+T(n...

Q: When there is just one overflow record, why does an overflow block need to be utilised in the sequen...

A: When there is just one overflow record, why does an overflow block need to be utilised in the sequen...

Q: Why don't programmers use machine language?

A: We need to tell about why programmers don't use machine language to write the programs.

Q: Create a Java program that asks the user to enter three (3) first names then display the following 1...

A: 1)Read first names from user  2)use for loop concatenate to one first name with other  3)print the a...

Q: A- System.out.print(Math.floor(5.7));

A: 1) We have a statement in question System.out.print(Math.floor(5.7)); 2) To understand this statem...

Q: 9. How many data total? (a) 48 (c) 56

A:   Main memory size=216 Cache size=32*64bytes=211bytes Array size=2500bytes  cache is empty but array...

Q: How can you aid in preventing internal and external threats?

A: Introduction: A threat is any suspicious or harmful action that has the potential to harm sensitive ...

SQL

SQL stands for Structured Query Language, is a form of communication that uses queries structured in a specific format to store, manage & retrieve data from a relational database.  

Queries

A query is a type of computer programming language that is used to retrieve data from a database. Databases are useful in a variety of ways. They enable the retrieval of records or parts of records, as well as the performance of various calculations prior to displaying the results. A search query is one type of query that many people perform several times per day. A search query is executed every time you use a search engine to find something. When you press the Enter key, the keywords are sent to the search engine, where they are processed by an algorithm that retrieves related results from the search index. Your query's results are displayed on a search engine results page, or SER.