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4 years ago

Why were video games invented?

Computers and Technology

1 answer:

Alenkinab [10]4 years ago

4 0

The answer is in the following website: https://www.reference.com/history/were-video-games-invented-e9413d3dc1378766

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Match the definition

Katen [24]

Answer:

¿???????????? SORRY..........

8 0

3 years ago

How to copy and paste things that won't let you?

VLD [36.1K]

You take the ctrl buutton and hold it down while awlleclting the other setion you wouo would lieke to highlight.

5 0

3 years ago

Consider the following relation: CAR_SALE (Car#, Date_sold, Salesman#, Commision%, Discount_amt Assume that a car may be sold by

Nady [450]

Answer:

See explaination

Explanation:

The given relation is:

CAR_SALE(Car#, Date_sold, Salesperson#, Commission%, Discount_amt)

Primary key: {Car#,Salesperson#}

We will first check whether the relation is in 1NF.

A relation is said to be in the 1st Normal form(1NF) if all the columns in the relation have atomic values. In this case, the relation is in 1NF.

A relation is said to be in the second normal form(2NF) if it satisfies the condition that all non keys are completely dependent on the primary key and just a part of the primary key.

In the case of the CAR_SALE relation, the Commission% depends only on the Salesperson# and not on the combination of Car# and Salesperson#. This means that the given relation is not in 2NF. To satisfy 2NF, we make two relationships as given below:

SALE_DETAIL(Salesperson#, Commission%)

and CAR_SALE(Car#, Date_sold, Salesperson#, Discount_amt)

Now both the relations are in 2NF.

For a relation to be in 3NF, no non-key should be functionally dependent on another non key.

In the case of the CAR_SALE relation, it is specified that the Date_sold field determines the Discount_amt. Therefore the modified CAR_SALE is not in 3NF.

To satisfy 3NF, we seperate the non key and the dependent non key and create a different table.

Final Relations:

SALE_DETAIL(Salesperson#, Commission%)

Discount_Detail(Date_Sold, Discount_Amt)

CAR_SALE(Car#, Date_sold, Salesperson#)

7 0

3 years ago

Which three steps might be included in an algorithm for a digital thermostat?

chubhunter [2.5K]

Answer:

Explanation:

It certainly isn't D. It would cost a fortune to make that happen. It's not impossibe. Just impractical.

It's not A. Resistance is a floating physical thing present in the air.

B could be correct, but there is a better answer.

The answer is C. A thermistor is a resistance that is temperature sensitive.

7 0

2 years ago

A personal phone directory contains room for first names and phone numbers for 30 people. Assign names and phone numbers for the

Fynjy0 [20]

Answer:

# include <iostream.h>

# include <stdio.h>

# include <string.h>

using namespace std;

class citizen

{

int i;

public string name[30];

public long int phonenumber[30];

public void addindividual(string name1)

{

If (i<=30)

{ int flag=0;

for(int j=0; j<=i;j++)

{

if (strcmp(name[i], name1)

{

flag=1;

}

else

{

flag=0;

}

If (flag)

{

if (i<30)

{

for(j=i+1;j<=30; j++)

{

cout<<"Enter the name:"; getchar(name[j]);

cout<<"Enter the phone number:"; cin>>phonenumber[j];

i++;

}

else

{

cout<<"The person already exists";

exit();

}

else

{

cout<<"array is full:";

exit();

}

Void main()

{

string str;

cout<<" Enter name:";

getline(cin, str); ;

citizen c1=new citizen();

c1.addindividual(name1);

}

Explanation:

With a little more effort you can make the program allow the user to enter any number of details, but less than 30 overall. We have used here flag, and as a programmer we know why we use the Flag. It is used to check whether certain Boolean condition is fulfilled or not. Here, we are checking whether a given name is present in the array of names, and if it is not present, we add that to the list. And if the name is present, we print, it already exist.

4 0

3 years ago