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harina [27]
3 years ago
10

What is the difference between a key and a superkey?

Computers and Technology
1 answer:
netineya [11]3 years ago
4 0

Answer:

Answered below

Explanation:

A key is a single or combination of many attributes that enable us pull a row of data from a table. Keys are identifiers used to get data seamlessly from the database. A key can be a primary key, secondary key, control key, or super key. A super key is a key or set of attributes use to identify tuples in a database. It can contain extra attributes not necessary for uniquely identifying a database.

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Advocard [28]
I would say the correct answer is #1.
5 0
3 years ago
Most simple computer programs follow the basic pattern defined by the acronym IPO. What does IPO mean with regards to programmin
Art [367]

Answer:

IPO means Input - Process - Output

Explanation:

The IPO model means that a computer program is given an input to process, it processes the given input and return an output as the result.

3 0
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Write an algorithm that asks a user to enter a number between 1 and 10. (This range includes the numbers 1 and 10.) When they en
Nataliya [291]

Answer:

do{

   cout<<"Introduce number \n"; //print the message

   cin>>num; //set the value of the number given

}while(num<1 || num>10); //repeat while the number is out of the range

cout<<"Number: "<<num; //print the number

Explanation:

The idea behind this code is to create a loop in which I can compare the number given  (between 1 and 10) and then print the number or get back and ask the number again.

#include <iostream>

using namespace std;

int main()

{

   int num; //create num variable

do

{

   cout<<"Introduce number \n"; //print the message

   cin>>num; //set the value of the number given

}while(num<1 || num>10); //repeat while the number is out of the range

cout<<"Number: "<<num; //print the number

}

4 0
3 years ago
Activity
ch4aika [34]

Answer:

The answer to this question is given below in the explanation section.

Explanation:

This question is about creating a table using a spreadsheet program to record how many t-shirt each team member sold.

The spreadsheet file is attached.    

Download xlsx
3 0
3 years ago
Please help!! thank you so much!! &lt;3
sasho [114]

Answer: <em>The kinetic energy of the 20 gram ball is half the kinetic energy of the 10 gram ball.</em>

<em />

Explanation: :)

7 0
3 years ago
Read 2 more answers
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