La clave principal le permite crear un identificador único para cada fila de su tabla. Es importante porque le ayuda a vincular su tabla a otras tablas (relaciones) utilizando la clave principal como vínculos.
What is digital marketing?
Answer:
Digital marketing is the component of marketing that utilizes internet and online based digital technologies such as desktop computers, mobile phones and other digital media and platforms to promote products and services.
Explanation:
Which of the following are complete sets of data and are the rows of the table?
Files
Fields
Queries
Records
Answer:
I think the answer is going to be records
Three reasons why users attach speakers to their computer
Parts of a computer software
Answer:
I think application software
utility software
networking software
What methods do phishing and spoofing scammers use?
Answer:
please give me brainlist and follow
Explanation:
There are various phishing techniques used by attackers:
Installing a Trojan via a malicious email attachment or ad which will allow the intruder to exploit loopholes and obtain sensitive information. Spoofing the sender address in an email to appear as a reputable source and request sensitive information
Write a program named HoursAndMinutes that declares a minutes variable to represent minutes worked on a job, and assign a value to it. Display the value in hours and minutes. For example, 197 minutes becomes 3 hours and 17 minutes.'
Answer:
Explanation:
The following code is written in Python, it asks the user for the number of minutes worked. Divides that into hours and minutes, saves the values into separate variables, and then prints the correct statement using those values. Output can be seen in the attached image below.
import math
class HoursAndMinutes:
min = input("Enter number of minutes worked: ")
hours = math.floor(int(min) / 60)
minutes = (int(min) % 60)
print(str(hours) + " hours and " + str(minutes) + " minutes")
Note that common skills are listed toward the top, and less common skills are listed toward the bottom. According to O*NET, what are common skills needed by Secondary School Special Education Teachers? Check all that apply.
instructing
installation
learning strategies
repairing
active listening
technology design
Answer:
A. Instucting C. Learning Strategies E. Active Listening
Explanation:
Got it right on assignment
a buffer storage that improve computer performance by reducing access time is
You are responsible for a rail convoy of goods consisting of several boxcars. You start the train and after a few minutes you realize that some boxcars are overloaded and weigh too heavily on the rails while others are dangerously light. So you decide to stop the train and spread the weight more evenly so that all the boxcars have exactly the same weight (without changing the total weight). For that you write a program which helps you in the distribution of the weight.
Your program should first read the number of cars to be weighed (integer) followed by the weights of the cars (doubles). Then your program should calculate and display how much weight to add or subtract from each car such that every car has the same weight. The total weight of all of the cars should not change. These additions and subtractions of weights should be displayed with one decimal place. You may assume that there are no more than 50 boxcars.
Example 1
In this example, there are 5 boxcars with different weights summing to 110.0. The ouput shows that we are modifying all the boxcars so that they each carry a weight of 22.0 (which makes a total of 110.0 for the entire train). So we remove 18.0 for the first boxcar, we add 10.0 for the second, we add 2.0 for the third, etc.
Input
5
40.0
12.0
20.0
5. 33.
0
Output
- 18.0
10.0
2.0
17.0
-11.0
Answer:
The program in C++ is as follows:
#include <iostream>
#include <iomanip>
using namespace std;
int main(){
int cars;
cin>>cars;
double weights[cars];
double total = 0;
for(int i = 0; i<cars;i++){
cin>>weights[i];
total+=weights[i]; }
double avg = total/cars;
for(int i = 0; i<cars;i++){
cout<<fixed<<setprecision(1)<<avg-weights[i]<<endl; }
return 0;
}
Explanation:
This declares the number of cars as integers
int cars;
This gets input for the number of cars
cin>>cars;
This declares the weight of the cars as an array of double datatype
double weights[cars];
This initializes the total weights to 0
double total = 0;
This iterates through the number of cars
for(int i = 0; i<cars;i++){
This gets input for each weight
cin>>weights[i];
This adds up the total weight
total+=weights[i]; }
This calculates the average weights
double avg = total/cars;
This iterates through the number of cars
for(int i = 0; i<cars;i++){
This prints how much weight to be added or subtracted
cout<<fixed<<setprecision(1)<<avg-weights[i]<<endl; }
The function below takes one parameter: an integer (begin). Complete the function so that it prints every other number starting at begin down to and including 0, each on a separate line. There are two recommended approaches for this: (1) use a for loop over a range statement with a negative step value, or (2) use a while loop, printing and decrementing the value each time.
1 - def countdown_trigger (begin):
2 i = begin
3 while i < 0:
4 print(i)
5 i -= 1 Restore original file
Answer:
Follows are code to the given question:
def countdown_trigger(begin):#defining a method countdown_trigger that accepts a parameter
i = begin#defining variable that holds parameter value
while i >= 0:#defining while loop that check i value greater than equal to0
print(i)#print i value
i -= 2 # decreasing i value by 2
print(countdown_trigger(2))#calling method
Output:
2
0
None
Explanation:
In this code, a method "countdown_trigger" is declared, that accepts "begin" variable value in its parameters, and inside the method "i" declared, that holds parameters values.
By using a while loop, that checks "i" value which is greater than equal to 0, and prints "value" by decreasing a value by 2.
4 reasons why users attach speakers
to their computers
Answer: we connected speakers with computers for listening voices or sound because the computer has not their own speaker. the purpose of speakers is to produce audio output that can be heard by the listener. Speakers are transducers that convert electromagnetic waves into sound waves. The speakers receive audio input from a device such as a computer or an audio receiver.
Explanation: Hope this helps!
How should you present yourself online?
a
Don't think before you share or like something
b
Argue with other people online
c
Think before you post
d
Tag people in photos they may not like
hurry no scammers
Answer: C) Think before you post.
Explanation:
There's a very good chance that whatever you post online will remain there indefinitely. So it's best to think about what would happen if you were to post a certain message on a public place. Keep in mind that you should also safeguard against your privacy as well.
your computer has been running slowly and you suspect it because its is low on memory. you review the hardware configuration and find that computer has only 4gb of ram. how can you determine how much memory your computer should have to run properly?
d) State any three (3) reasons why users attach speakers to their computer?
Answer:
the purpose of speakers is to produce audio output that can be heard by the listener. Speakers are transducers that convert electromagnetic waves into sound waves. The speakers receive audio input from a device such as a computer or an audio receiver.
Explanation: Hope this helps!
If you want to continue working on your web page the next day, what should you do?
a. Create a copy of the file and make changes in that new copy
b. Start over from scratch with a new file
c. Once a file has been saved, you cannot change it
d. Reopen the file in your text editor to
Answer:
d. Reopen the file in your text editor
Answer:
eeeeeeeee
Explanation:
Is the ASSIGN statement a data entry statement, true or false?
You plan to make a delicious meal and want to take the money you need to buy the ingredients. Fortunately you know in advance the price per pound of each ingredient as well as the exact amount you need. The program should read in the number of ingredients (up to a maximum of 10 ingredients), then for each ingredient the price per pound. Finally your program should read the weight necessary for the recipe (for each ingredient in the same order). Your program should calculate the total cost of these purchases, then display it with 6 decimal places.
Example There are 4 ingredients and they all have a different price per pound: 9.90, 5.50, 12.0, and 15.0. You must take 0.25 lbs of the first, 1.5 lbs of the second, 0.3 lbs of the third and 1 lb of the fourth. It will cost exactly $29.325000.
Answer:
In Python:
prices = []
pounds = []
print("Enter 0 to stop input")
for i in range(10):
pr = float(input("P rice: "+str(i+1)+": "))
pd = float(input("Pound: "+str(i+1)+": "))
if pr != 0 and pd != 0:
prices.append(pr)
pounds.append(pd)
else:
break
amount = 0
for i in range(len(pounds)):
amount+= (pounds[i]*prices[i])
print("Amount: $",amount)
Explanation:
These initialize the prices and pounds lists
prices = []
pounds = []
This prompts the user to enter up to 10 items of press 0 to quit
print("Enter 0 to stop input")
This iterates through all inputs
for i in range(10):
This gets the price of each item
pr = float(input("P rice: "+str(i+1)+": "))
This gets the pound of each item
pd = float(input("Pound: "+str(i+1)+": "))
If price and pound are not 0
if pr != 0 and pd != 0:
The inputs are appended to their respective lists
prices.append(pr)
pounds.append(pd)
If otherwise, the loop is exited
else:
break
This initializes total to 0
amount = 0
This iterates through all inputs
for i in range(len(pounds)):
This multiplies each pound and each price and sum them up
amount+= (pounds[i]*prices[i])
The total is then printed
print("Amount: $",amount)
Write an application that combines several classes and interfaces.
Answer:
Explanation:
The following program is written in Java and it combines several classes and an interface in order to save different pet objects and their needed methods and specifications.
import java.util.Scanner;
interface Animal {
void animalSound(String sound);
void sleep(int time);
}
public class PetInformation {
public static void main(String[] args) {
Scanner scnr = new Scanner(System.in);
String petName, dogName;
String dogBreed = "null";
int petAge, dogAge;
Pet myPet = new Pet();
System.out.println("Enter Pet Name:");
petName = scnr.nextLine();
System.out.println("Enter Pet Age:");
petAge = scnr.nextInt();
Dog myDog = new Dog();
System.out.println("Enter Dog Name:");
dogName = scnr.next();
System.out.println("Enter Dog Age:");
dogAge = scnr.nextInt();
scnr.nextLine();
System.out.println("Enter Dog Breed:");
dogBreed = scnr.nextLine();
System.out.println(" ");
myPet.setName(petName);
myPet.setAge(petAge);
myPet.printInfo();
myDog.setName(dogName);
myDog.setAge(dogAge);
myDog.setBreed(dogBreed);
myDog.printInfo();
System.out.println(" Breed: " + myDog.getBreed());
}
}
class Pet implements Animal{
protected String petName;
protected int petAge;
public void setName(String userName) {
petName = userName;
}
public String getName() {
return petName;
}
public void setAge(int userAge) {
petAge = userAge;
}
public int getAge() {
return petAge;
}
public void printInfo() {
System.out.println("Pet Information: ");
System.out.println(" Name: " + petName);
System.out.println(" Age: " + petAge);
}
//The at (email symbol) goes before the Override keyword, Brainly detects it as a swearword and wont allow it
Override
public void animalSound(String sound) {
System.out.println(this.petName + " says: " + sound);
}
//The at (email symbol) goes before the Override keyword, Brainly detects it as a swearword and wont allow it
Override
public void sleep(int time) {
System.out.println(this.petName + " sleeps for " + time + "minutes");
}
}
class Dog extends Pet {
private String dogBreed;
public void setBreed(String userBreed) {
dogBreed = userBreed;
}
public String getBreed() {
return dogBreed;
}
}
What are some examples and non-examples of digital security?
Answer:
Devices such as a smart card-based USB token, the SIM card in your cell phone, the secure chip in your contactless payment card or an ePassport are digital security devices
which of the following is an example of how to effectively avoid plagiarism
Answer:
You didn't list any choices, but in order to avoid all plagiarism, you must focus on rewriting the following script/paragraph in your own words. This could be anything from completely changing the paragraph (not the context) to summarizing the paragraph in your own words.
Answer:
Simon cites anything that he didnt know before he read it in any given source
Explanation:
a p e x
Create a public class called Exceptioner that provides one static method exceptionable. exceptionable accepts a single int as a parameter. You should assert that the int is between 0 and 3, inclusive.
If the int is 0, you should return an IllegalStateException. If it's 1, you should return a NullPointerException. If it's 2, you should return a ArithmeticException. And if it's 3, you should return a IllegalArgumentException.
// Begin class declaration
public class Exceptioner {
// Define the exceptionable method
public static void exceptionable(int number){
//check if number is 0.
if(number == 0) {
//if it is 0, return an IllegalStateException
throw new IllegalStateException("number is 0");
}
//check if number is 1
else if(number == 1) {
//if it is 1, return a NullPointerException
throw new NullPointerException("number is 1");
}
//check if number is 2
else if(number == 2) {
//if it is 2, return an ArithmeticException
throw new ArithmeticException("number is 2");
}
//check if number is 3
else if(number == 3) {
//if it is 3, return an IllegalArgumentException
throw new IllegalArgumentException("number is 3");
}
}
}
Sample Output:Exception in thread "main" java.lang.ArithmeticException: number is 2
at Main.exceptionable(Main.java:26)
at Main.main(Main.java:36)
Explanation:The code is written in Java with comments explaining important parts of the code.
A sample output for the call of the method with number 2 is also provided. i.e
exception(2)
gives the output provided above.
(The Person, Student, Employee, Faculty, and Staff classes) Design a class named Person and its two subclasses named Student and Employee. Make Faculty and Staff subclasses of Employee. A person has a name, address, phone number, and email address.A student has a class status (freshman, sophomore, junior, or senior). Define the status as a constant. An employee has
Answer:
Explanation:
The following code is written in Java and creates all the classes as requested with their variables, and methods. Each extending to the Person class if needed. Due to technical difficulties I have attached the code as a txt file below, as well as a picture with the test output of calling the Staff class.
I want to know the basic of Excel
Answer:
Use Pivot Tables to recognize and make sense of data.
Add more than one row or column.
Use filters to simplify your data.
Remove duplicate data points or sets.
Transpose rows into columns.
Split up text information between columns.
Use these formulas for simple calculations.
Get the average of numbers in your cells.
HURRY- I’ll give 15 points and brainliest answer!!
How do you insert text into a presentation??
By selecting text from the insert menu
By clicking in the task pane and entering text
By clicking in a placeholder and entering text
By drawing a text box clicking in it and entering text
(This answer is multiple select)
Answer:
the last one the drawing thingy:)))
3. Write a program to find the area of a triangle using functions. a. Write a function getData() for user to input the length and the perpendicular height of a triangle. No return statement for this function. b. Write a function trigArea() to calculate the area of a triangle. Return the area to the calling function. c. Write a function displayData() to print the length, height, and the area of a triangle ( use your print string) d. Write the main() function to call getData(), call trigArea() and call displayData().
Answer:
The program in C++ is as follows:
#include<iostream>
using namespace std;
void displayData(int height, int length, double Area){
printf("Height: %d \n", height);
printf("Length: %d \n", length);
printf("Area: %.2f \n", Area);
}
double trigArea(int height, int length){
double area = 0.5 * height * length;
displayData(height,length,area);
return area;
}
void getData(){
int h,l;
cin>>h>>l;
trigArea(h,l);
}
int main(){
getData();
return 0;
}
Explanation:
See attachment for complete program where comments are used to explain the solution
PLS HELP SO I CAN PASS WILL GIVE BRAINLINESS AND 30 POINTS
Charlie Chaplin is know for developing
a
The Dramedy
b
Early Special Effects
c
Slap-Stick
d
The Prat-Fall
Question 2 (1 point)
Chaplin felt it was important for the audience to
a
turn off their cellphones during the movie.
b
believe the stunts were real by doing them himself.
c
escape from their problems by avoiding difficult topics.
d
have an emotional connection with the characters.
Question 3 (3 points)
Match the silent film with its modern influence
Column A
1.
Metropolis:
Metropolis
2.
The Kid:
The Kid
3.
Nosferatu:
Nosferatu
Column B
a.Freddy Kruger
b.The Simpsons
c.Sharknado
d.Star Wars
Question 4 (1 point)
How did Nosferatu change the Vampire cannon (story)?
a
Vampires are friendly
b
Vampires can be killed by sunlight
c
Vampires can become invisible
d
Vampires can be repelled by garlic
Question 5 (1 point)
Metropolis was the first film to
a
have religious undertones.
b
use special effects.
c
have humanoid robots.
d
use Gothic Imagery.
movies being the kid , nosferatu , and metropolis
Answer:
a
have religious undertones.
b
use special effects.
c
have humanoid robots.
d
use Gothic Imagery.
Explanation:
PLEASE HURRY I WILL GIVE BRAILIEST TO WHO EVER ANSWERS AND IS CORRECT
Select all benefits of using a wiki for business.
inexpensive
accessible twenty-four hours per day and seven days per week
online conversation
quick and easy editing
document sharing
Answer:
B, D, E is the answers I think
Answer:
Accessible twenty-four hours per day and seven days per week
Quick and easy sharing
Document sharing
If a system contains 1,000 disk drives, each of which has a 750,000- hour MTBF, which of the following best describes how often a drive failure will occur in that disk farm:
a. once per thousand years
b. once per century, once per decade
c. once per year, once per month
d. once per week
e. once per day
f. once per hour
g. once per minute
h. once per second
Answer:
once per month
Explanation:
The correct answer is - once per month
Reason -
Probability of 1 failure of 1000 hard disk = 750,000/1000 = 750 hrs
So,
750/24 = 31.25 days
⇒ approximately one in a month.
You will write code to manipulate strings using pointers but without using the string handling functions in string.h. Do not include string.h in your code. You will not get any points unless you use pointers throughout both parts.
You will read in two strings from a file cp4in_1.txt at a time (there will be 2n strings, and you will read them until EOF) and then do the following. You alternately take characters from the two strings and string them together and create a new string which you will store in a new string variable. You may assume that each string is no more than 20 characters long (not including the null terminator), but can be far less. You must use pointers. You may store each string in an array, but are not allowed to treat the string as a character array in the sense that you may not have statements like c[i] = a[i], but rather *c *a is allowed. You will not get any points unless you use pointers.
Example:
Input file output file
ABCDE APBQCRDSETFG
PQRSTFG arrow abcdefghijklmnopgrstuvwxyz
acegikmoqsuwyz
bdfhjlnprtvx
Solution :
#include [tex]$< \text{stdio.h} >$[/tex]
#include [tex]$< \text{stdlib.h} >$[/tex]
int [tex]$\text{main}()$[/tex]
{
[tex]$\text{FILE}$[/tex] *fp;
[tex]$\text{fp}$[/tex]=fopen("cp4in_1.txt","r");
char ch;
//while(1)
//{
while(!feof(fp))
{
char *[tex]$\text{s1}$[/tex],*[tex]$\text{s2}$[/tex],*[tex]$\text{s3}$[/tex];
[tex]$\text{s1}$[/tex] = (char*) [tex]$\text{malloc}$[/tex]([tex]$20$[/tex] * [tex]$\text{sizeof}$[/tex](char));
[tex]$\text{s2}$[/tex] = (char*) [tex]$\text{malloc}$[/tex]([tex]$20$[/tex] * [tex]$\text{sizeof}$[/tex](char));
[tex]$\text{s3}$[/tex] = (char*) [tex]$\text{malloc}$[/tex]([tex]$40$[/tex] * [tex]$\text{sizeof}$[/tex](char));
[tex]$\text{int i}$[/tex]=0,j=0,x,y;
while(1)
{
ch=getc(fp);
if(ch=='\n')
break;
*(s1+i)=ch;
i++;
}
while(1)
{
ch=getc(fp);
if(ch=='\n')
break;
*(s2+j)=ch;
j++;
}
for(x=0;x<i;x++)
{
*(s3+x)=*(s1+x);
}
for(y=0;y<j;x++,y++)
{
*(s3+x)=*(s2+y);
}
for(x=0;x<i+j;x++)
{
printf("%c",*(s3+x));
}
printf("\n");
getc(fp);
}
}
Write a Python class that inputs a polynomial in standard algebraic notation and outputs the first derivative of that polynomial. Both the inputted polynomial and its derivative should be represented as strings.
Answer:Python code: This will work for equations that have "+" symbol .If you want to change the code to work for "-" also then change the code accordingly. import re def readEquation(eq): terms = eq.s
Explanation: