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mina [271]
3 years ago
8

Combination of one or more columns used to identify particular rows in a relation is a (n)​

Computers and Technology
1 answer:
Licemer1 [7]3 years ago
5 0

Answer:

Combination of one or more columns used to identify particular rows in a relation is a key

You might be interested in
Redo Programming Exercise 16 of Chapter 4 so that all the named constants are defined in a namespace royaltyRates. PLEASE DONT F
Komok [63]

Answer:

Code is given below and output is attached in the diagram:

Explanation:

//Use this header file while using visual studio.

#include "stdafx.h"

//Include the required header files.

#include<iostream>

//Use the standard naming convention.

using namespace std;

//Define a namespace royaltyRates.

namespace royaltyRates

{

    //Declare and initialize required named constants.

    const double PAY_ON_DELIVERY_OF_NOVAL = 5000;

    const double PAY_ON_PUBLISH_OF_NOVAL = 20000;

    const double PER_ON_NET_PRICE_SECOND_OPTION =

    0.125;

    const double PER_ON_NET_PRICE_FIRST_4000 = 0.1;

    const double PER_ON_NET_PRICE_OVER_4000 = 0.14;

};

//Start the execution of main() method.

int main()

{

    //Declare and initialize the required variables

    //which are going to be used to calculate

    //royalities under each option.

    float net_price;

    int num_copies;

    float royaltyUnderOption1, royaltyUnderOption2,

    royaltyUnderOption3;

    royaltyUnderOption1 = royaltyUnderOption2

    = royaltyUnderOption3 = 0;

    //Prompt the user to enter the net price of each

    //novel.

    cout << "Please enter the net price for each ";

    cout << "copy of the novel : ";

    cin >> net_price;

    //Prompt the user to enter the estimated number

    //of copies of the novels to be sold.

    cout << "Please enter the estimated number ";

    cout << "of copies to be sold : ";

    cin >> num_copies;

    //Display the required details and royalty

    //calculated under option 1.

    cout << "\n*** Option 1: ****" << endl;

    cout << "Net price of each novel: $" << net_price;

    cout << endl;

    cout << "Estimated number of copies to be sold ";

    cout << "is: " << num_copies << endl;

    cout << "$";

    cout << royaltyRates::PAY_ON_DELIVERY_OF_NOVAL;

    cout << " is paid to author for the delivery of ";

    cout << "the final manuscript and $";

    cout << royaltyRates::PAY_ON_PUBLISH_OF_NOVAL;

    cout << " is paid for the publication of ";

    cout << "novel." << endl;

    royaltyUnderOption1 =

    royaltyRates::PAY_ON_DELIVERY_OF_NOVAL +

    royaltyRates::PAY_ON_PUBLISH_OF_NOVAL;

    cout << "Total amount of royalty under option 1 ";

    cout << "is $" << royaltyUnderOption1 << endl;

    //Display the required details and royalty

    //calculated under option 2.

    cout << "\n*** Option 2: ****" << endl;

    cout << "Net price of each novel: $";

    cout << net_price << endl;

    cout << "Estimated number of copies to be sold ";

    cout << "is: " << num_copies << endl;

    royaltyUnderOption2 =

   (royaltyRates::PER_ON_NET_PRICE_SECOND_OPTION *

    net_price)* num_copies;

    cout << "Total amount of royalty under option 2 ";

    cout << "is $" << royaltyUnderOption2 << endl;

    //Display the required details and royalty

    //calculated under option 3.

    cout << "\n*** Option 3: ****" << endl;

    cout << "Net price of each novel: $" << net_price;

    cout << endl;

    cout << "Estimated number of copies to be sold ";

    cout << "is: " << num_copies << endl;

    //If the number of copies is greater than 4000.

    if (num_copies > 4000)

    {

         //Total amount of royalty will be 10% of net

         //price of first 4000 copies and 14 % of net

         //price of copies sold over 4000.

         royaltyUnderOption3 =

         (royaltyRates::PER_ON_NET_PRICE_FIRST_4000 *

         net_price) * 4000 +

         (royaltyRates::PER_ON_NET_PRICE_OVER_4000 *

         net_price) * (num_copies - 4000);

    }

    //Otherwise,

    else

    {

         //Total amount of royalty will be 10% of net

         //price of first 4000 copies.

         royaltyUnderOption3 =

         (royaltyRates::PER_ON_NET_PRICE_FIRST_4000 *

         net_price) * num_copies;

    }

    cout << "Total amount of royalty under option 3 ";

    cout << "is $" << royaltyUnderOption3 << endl;

    //If the royalty under option 1 is greater than

    //royalty under option 2 and 3, then option 1 is

    //best option.

    if (royaltyUnderOption1 > royaltyUnderOption2 &&

    royaltyUnderOption1 > royaltyUnderOption3)

    {

         cout << "\nOption 1 is the best option that ";

         cout << "author can choose." << endl;

    }

    //If the royalty under option 2 is greater than

    //royalty under option 1 and 3, then option 2 is

    //best option.

    else if (royaltyUnderOption2 > royaltyUnderOption1

    && royaltyUnderOption2 > royaltyUnderOption3)

    {

         cout << "\nOption 2 is the best option that ";

         cout << "author can choose." << endl;

    }

    //If the royalty under option 3 is greater than

    //royalty under option 1 and 2, then option 3 is

    //best option.

    else

    {

         cout << "\nOption 3 is the best option that ";

         cout << "author can choose." << endl;

    }

    //Use this command while using visual studio.

    system("pause");

    return 0;

}

5 0
3 years ago
Designing a video game takes tons of creativity. What inspires your personal creativity and ideas for video games? Explain and g
Whitepunk [10]

Answer:

This is what I have so far

Designing a video game takes tons of creativity. What inspires your personal creativity and ideas for video games? Explain and give several specific examples. How do you make sure your ideas are original and not copied directly from other video games? Explain.

What inspires my personal creativity is all the indie games I have played in the past, and they have always amazed me with their design, video games have always been a part of me from the Mario games I played when I was little to AAA titles. My ideas are original because I’ve seen so much, that I know when something is unique and original.

Explain how the four-game mechanics mentioned in the unit (reward, risk/loss, levels, and feedback) could work together to create an interesting sports video game.

Every 10 levels is a new sport and each level is harder, but at the end of each level you earn money to buy better gear, (like a system from simple rpg,) but if you lose, you also lose money. Also, you would need to use feedback that you would get from players to improve the game.

You’ve learned that video games use rewards to keep players coming back for more. Can you think of an example in real life that uses rewards to keep people coming back for more? How is this similar to video game rewards? Explain.

When a person works 1 job for many years, they may get burnt out, but if they get a raise or a promotion every once and awhile, then they will be more motivated and come back for more. This is similar to games in a few ways, like if you play a single game for years, it will get boring, but if that game receives an update, then it will motivate people to play.

7 0
3 years ago
Help please<br>Who will give the answer I'll mark him/her as brainlist..​
kolbaska11 [484]

Answer:

We will be using Average function of Excel Calculation sheet.

Its Syntax in Calc sheet is : =AVERAGE (number1, [number2], ...)

or you can use =Average and then click on the first cell and drag the whole row till end and close the brackets. It will calculate the average of that row.

Once you have applied average function on first row, you can drag this cell down the column and it will replicate the same function for respective rows.

4 0
3 years ago
True or False
krok68 [10]

I think that the answer is false. But I'm not sure.Let meknow if I'm right.

8 0
3 years ago
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The media should be encouraged to speak with everyone at the POD site.<br> a. True<br> B. False
MakcuM [25]
The statement above is False.

The Media SHOULD NOT be encouraged to speak with everyone at the POD site. POD is stand for Point on Delivery, a module to deliver networkind services. POD design pattern is really impportantn in service provider infrastructue, for instance data centers supporting which required a high level of concentration
7 0
3 years ago
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