In a train stations database, an employee MUST be a train driver, ticket issuer or train attendant, with following constraint: Same employee cannot occupy more than one job type.
Draw EER diagram to represent specialization of employees in the train station database.

Answer:elab

Explanation:

Answer:

The y-intercept is going to fall by -2 but the x-intercept will run +5

Explanation:

Becuase the derivative of the equation causes this when plugged into the formula

Ask the user for the x-coordinate of the first point: Input.

Calculate the slope: Process.

Display the slope: Output.

Ask the user for the x-coordinate of the first point:

This step involves obtaining data from an external source, which is the user.

The program needs the x-coordinate of the first point to perform calculations.

The program doesn't have this information beforehand, so it relies on the user to provide it.

Hence, it falls under the category of input.

Calculate the slope:

This step involves performing computations and transformations on the provided input data.

The program takes the coordinates of two points, computes the differences in y-coordinates and x-coordinates, and then calculates the slope using these differences.

This involves mathematical operations and logic, which is processing the data to derive a meaningful result.

Therefore, it is categorized as a process.

Display the slope:

This step involves presenting the result of the calculations to the user. The program is sending information to an external destination, which is the user's screen.

The calculated slope is being made accessible to the user, providing them with the outcome of the computation.

Hence, it falls under the category of output.

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Answer:

View

Explanation:

Microsoft Word refers to a word processing software application or program developed by Microsoft Inc. to enable its users type, format and save text-based documents.

In Microsoft Word 2019, the users are availed with the ability to edit the word document in the following view type;

I. View Mode

II. Print Mode

III. Drift Layout

The Microsoft Word developers has made it easy for their users to automate the tasks used frequently through the creation and execution of macros.

Basically, macros comprises of commands and instructions which may be grouped together as a single command to automatically execute a task. You can locate the Macro feature in the View tab of Microsoft Word.

The output of the first statement in the main method is 23.

In this question, the answer is 23 because In java (+) concatenation is used for joining two strings together. If we use statement ("i + j is " + (i + j)) like this then the output will change.but the output of the first statement in the main method is 23.because it print (i) value first that is 2.after that It will print (j) value that is 3.So, the output is 23.

package Unit3_Mod2;

public class Array3DExample3 {

public static void main (String[] argv)

{

int[][][] A = {

{

{1,2,3,4},

{5,6,7,8},

{9,10,11,12}

},

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Answer:

No

Explanation:

Short answer:

In contrast to software, hardware is a physical entity. Hardware and software are interconnected, without software, the hardware of a computer would have no function. However, without the creation of hardware to perform tasks directed by software via the central processing unit, software would be useless.

Extended answer:

hardware cannot function without software. Without software, hardware is just a piece of silicon with some pins jutting out of it.

Softwares are sets of instructions, somewhat like a soul is for humans, made to tell the hardware what to do.

Many have a misconception that hardware you buy such as a graphics card or a motherboard does not come with software. In fact, it does. It is not however, visible to mosts users as its job is to make the piece of silicon function as a computer.

The RAM is one such hardware that does not come with software and it needs to be plugged to a motherboard which has a software to function.

No, hardware cannot work without software.

So, in order for a computer or electronic device to work, it requires both hardware and software working together.

Here,

Hardware refers to the physical components of a computer or electronic device, such as the processor, memory, hard drive, and motherboard. Software, on the other hand, consists of the programs and instructions that tell the hardware what tasks to perform.

Hardware and software are interdependent. Hardware needs software to function because without software, hardware does not have any instructions to execute.

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Answer:

Desmos (colab w/h math antics) , Calendar, Quizlet (colab w/h google) , Quizizz (colab w/h quizlet) , Kahoot (colab w/h google) , or Google Translate

Answer:

6 address lines

Explanation:

The computation of the number of address lines needed is shown below:

Given that

Total memory = 64MB

= \(2^6MB\)

=\(2^{26} bytes\)

Also we know that in 1MB RAM the number of chips is 6

So, the number of address lines is \(2^{26} address\) i..e 26 address lines

And, the size of one chip is equivalent to 1 MB i.e. \(2^{20} bytes\)

For a single 1MB chips of RAM, the number of address lines is

\(\frac{2^{26}}{2^{20}} \\\\= 2^6 address\)

Therefore 6 address lines needed

In this situation, firewall techniques will you employ.

The monitoring and filtering of incoming and outgoing network traffic by a firewall, a network security tool, is done in accordance with the security policies that have already been defined by the company. Essentially, a firewall is the wall that separates a private internal network from the public Internet.

There are four main kinds of firewalls, depending on how they work. a packet-filtering firewall. Firewalls that use packet filtering are the most traditional and fundamental. Routers at the circuit level. Stateful Check Firewalls. Applied-Level Gateways (Proxy Firewalls).

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The topic would be included within the discipline of software engineering is Testing and development of apps.

The Students who are said to focus on software engineering are known to be expected to benefit and get a whole lot of knowledge from a lot of subject areas.

Theses areas includes computer programming, algorithms, numerical methods, design patterns, human-computer interaction, and others.

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Answer:

A.

Explanation:

The error message you're encountering suggests that the function read_statistic('food_name') is returning None instead of an iterable object that can be unpacked into three variables (pos, neg, and cust).

To resolve this issue, you should check the implementation of the read_statistic function. It seems that the function is not returning the expected values. Here are a few possible reasons for this error:

File or data not found: The function may be attempting to read statistics from a file or data source that doesn't exist or is inaccessible. Ensure that the file or data is present and accessible.

Here's an example:

python

Copy code

def read_statistic(filename):

   try:

       # Code to read the statistics from the file or data source

       # ...

       # Assuming you have retrieved the statistics successfully

       return pos, neg, cust

   except Exception as e:

       print(f"Error occurred: {e}")

       return None

By adding error handling and printing the exception message, you can get more information about the specific issue that is causing the function to return None.

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Answer:

First you read the question and numbers, then you use the numbers in the correct way and you try reallllyyy hard, you will find your answer! Hope this helps! :D

Answer:

Here's an example Java application that reads daily sales data from a text file, calculates the total and average sales, and displays the results:

import java.util.ArrayList;

import java.util.Scanner;

import java.io.File;

import java.io.FileNotFoundException;

public class SalesDemo {

   public static void main(String[] args) {

       // Ask the user for the name of the file

       Scanner input = new Scanner(System.in);

       System.out.print("Enter the name of the sales file: ");

       String fileName = input.nextLine();

       // Read the daily sales data from the file

       ArrayList<Double> salesData = new ArrayList<>();

       try {

           Scanner fileInput = new Scanner(new File(fileName));

           while (fileInput.hasNextDouble()) {

               double dailySales = fileInput.nextDouble();

               salesData.add(dailySales);

           }

           fileInput.close();

       } catch (FileNotFoundException e) {

           System.out.println("Error: File not found!");

           System.exit(1);

       }

       // Calculate the total and average sales

       double totalSales = 0.0;

       for (double dailySales : salesData) {

           totalSales += dailySales;

       }

       double averageSales = totalSales / salesData.size();

       // Display the results

       System.out.printf("Total sales: $%.2f\n", totalSales);

       System.out.printf("Average daily sales: $%.2f\n", averageSales);

   }

}

Assuming that the sales data is stored in a text file named "sales.txt" in the format of one daily sale per line, you can run this program and input "sales.txt" as the file name when prompted. The program will then calculate the total and average sales and display the results.

I hope this helps!

Explanation:

Answer:

Copy/ Paste - In the case of Copy/paste, the text you have copied will appear on both the locations i.e the source from where you copied the text and the target where you have pasted the text.

Cut/paste- In the case of Copy/paste, the text you have copied will appear on only one location i.e the target where you have pasted the text. The text will get deleted from the original position

int main {

//variables

unsigned long num = 0;

std::string phrase = " Please enter your name for confirmation: " ;

std::string name;

//codes

std::cout << phrase;

std::cin>> name;

while ( serial.available() == 0 ) {

num++;

};

if ( serial.avaliable() > 0 ) {

std::cout << " Thank you for your confirmation ";

};

};

Answer:

Written in Python

import math

principal = 8000

rate = 0.025

for i in range(1, 11):

    amount = principal + principal * rate

    principal = amount

    print("Year "+str(i)+": "+str(round(amount,2)))

Explanation:

This line imports math library

import math

This line initializes principal amount to 8000

principal = 8000

This line initializes rate to 0.025

rate = 0.025

The following is an iteration from year 1 to 10

for i in range(1, 11):

    This calculates the amount at the end of the year

    amount = principal + principal * rate

    This calculates the amount at the beginning of the next year

    principal = amount

    This prints the calculated amount

    print("Year "+str(i)+": "+str(round(amount,2)))

Answer:

(A) Injection

Explanation:

SQL injection is one of the most common web attacks used by attackers to steal data or compromise a web application (especially the database) by inserting or "injecting" SQL queries or commands through the input data from the web application.

In web applications, form inputs are used to make requests to the database either for validation or submission of data by executing queries in the database. If these queries are interfered with by passing query like commands into the form input fields rather than some regular alphanumeric characters, then we have an SQL injection.

When this happens;

i. the attackers can modify an SQL query to return additional results from the database

ii. the attackers can change a query to interfere with the application's regular logic flow.

iii. the attackers can extract sensitive information about the database such as its version and structure.

The four safety factors that must be considered when building mine shaft headgear model are:

Materials that are known to be used in the creation of a mine shaft headgear are the use of steel and concrete.

Note that The headgear must be one that can be able to transport miners and equipment to a depth of 500m underground and as such, The four safety factors that must be considered when building mine shaft headgear model are:

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Answer:

I would go for Malware.

Lossy compression means that when you compress the file, you're going to lose some of the detail is a true  statement.

2. InDesign is the industry standard for editing photos is a true statement.

3. Serif fonts are great for print media, while sans serif fonts are best for digital media is a true statement.

4. You should avoid using elements of photography such as repetition or symmetry in your photography is a false statement.

The term lossy compression is known to be done to a data in a file and it is one where the data of the file is removed and is not saved to its original form after  it has undergone decompression.

Note that data here tends to be permanently deleted, which is the reason  this method is said to be known as an irreversible compression method.

Therefore, Lossy compression means that when you compress the file, you're going to lose some of the detail is a true  statement.

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Charles Babbage was a mathematician and inventor and is regarded as the father of modern computer because he was responsible for designing the first automatic digital computer.

This refers to a electronic device which contains series of programs that processes numbers and words accurately. Another advantage of this type of computer is that it works at enormous speed.

Charles Babbage was the person who designed the first automatic digital computer which serves as a form of template for the computers available in today's world.

His aim was to reduce human error during calculations which was why it was chosen as the most appropriate choice.

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What type of cable might use an LC connector?

•Filter optic

Answer:

The explanation of the scenario would be described in the description paragraph below.

Explanation:

BYOD focuses on bringing smart equipment to that same position during which staff members work in that industry, such as connectivity to the corporation's information, technologies, and so forth. Everything just is becoming more and more widely known throughout traditional working environments

Advantage:

Disadvantage:

Throughout my personal view, bringing your someone else's target demographic wouldn't have been acknowledged by the corporations. After all, although the corporation is following a client set of policies that the customer should be doing the project for the service provider as well as the corporation has to save another customer from either the worker because several employees want to initiate their organization.

Based on the given information, the following statements are true:

In the context of database design, a country entity refers to a logical representation of a country within a database system.

It typically stores information related to countries, such as their names, codes, demographics, or any other relevant data.

The country entity serves as a reference point for other entities in the database, such as self-help groups (SHGs) or campaigns, allowing for proper organization and association of data within the system.

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Note that the option that is a part of a network's physical topology is; A printer plugged into a nearby desktop computer (Option B)

Physical network topology is the arrangement of a network's many components, with distinct connections representing physical network cables and nodes representing physical network devices (like switches).

The linked structure of a local area network is referred to as its physical topology (LAN). The physical topology is defined by the method used to link the physical devices on the network via cables, as well as the type of cabling utilized.

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Answer:

Follows are the code to this question:

#include<iostream>//defining a header file

using namespace std;

int main ()//defining a main method

{

float SubTotal,SalesTax,Total;//defining float variable for calculate the value

float item_1 = 15.95, item_2 = 24.95,item_3 = 6.95, item_4 = 12.95,item_5 = 3.95;//defining float variable and assign value

SubTotal = item_1+item_2+item_3+item_4+item_5;//use SubTotal to calculate the sum

SalesTax = SubTotal * 0.07;//use SalesTax to calculate 7% of SubTotal

Total = SubTotal + SalesTax ;//use Total to addd SubTotal and SalesTax

cout << "Price of item 1 : $"<< item_1 << endl;//print item_1 Price

cout << "Price of item 2 : $"<< item_2 <<endl;//print item_2 Price

cout << "Price of item 3 : $"<< item_3 <<endl;//print item_3 Price

cout << "Price of item 4 : $"<< item_4 <<endl;//print item_4 Price

cout << "Price of item 5 : $"<< item_5 <<endl;//print item_5 Price

cout <<"The SubTotal value is: $"<< SubTotal << endl;//print SubTotal value

cout <<"The SalesTax value is: $"<< SalesTax << endl;//print SalesTax value

cout << "The Total value is: $" << Total << endl;//print Total value

return 0;

}

output:

please find attached file.

Explanation:

In the above-given code, three float variable that are "SubTotal, SalesTax, and Total" is define for calculating and store its value, and in the next line, another five float variable " item_1, item_2, item_3, item_4, and  item_5" is declared that stores a float value which is defined in the question.

AYEAH,AND

Explanation:

Answer:

any website that has .Edu or .Gov at the end

Explanation: Edu means education and Gov means government

The three statements that take the problem-solving process to another level are:

In computer programming, they are known as conditional statements that give alternate commands to the computer system if a condition is not satisfied.

For example, a sample algorithm is given below:

Ask for student scores

If score > 70

THEN

Print "You have an A"

ELSE

IF score greater than or equals to 60 and < 70

THEN

Print "You have a B"

This refers to the types of statements that give alternate commands to the computer system if a condition is not satisfied.

Hence, we can see The three statements that take the problem-solving process to another level are:

In computer programming, they are known as conditional statements that give alternate commands to the computer system if a condition is not satisfied.

For example, a sample algorithm is given below:

Ask for student scores

If score > 70

THEN

Print "You have an A"

ELSE

IF score greater than or equals to 60 and < 70

THEN

Print "You have a B"

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