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xxTIMURxx [149]

2 years ago

6

When the primary key of one relation is placed in a second relation to represent a relationship, the attribute in the second rel

ation is called a(n) ________ key?

Computers and Technology

1 answer:

s2008m [1.1K]2 years ago

6 0

It is called a foreign key

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steposvetlana [31]

Answer:

1. False

2. False

3. True

4. False

Explanation:

1. Folders are the containers to store files

2. The delete option deletes the file

3. Files are moved to recycle bin after being deleted, and can be permanently deleted from recycle bin

4. "MS-DOS was the main operating system for IBM PC compatible personal computers during the 1980s, from which point it was gradually superseded by operating systems offering a graphical user interface (GUI), in various generations of the graphical Microsoft Windows operating system."

<em>source for #4: Wikipedia</em>

3 0

2 years ago

PLEASE HELP ASAP i will mark brilliant

Ray Of Light [21]

1. Cyberbullying
2.Confide in an adult you trust, such as a teacher or a parent
3.It is easy to miscommunicate and escalate the situation in an online environment

Cyberbully hurts people, so NEVER post something that could hurt someone's feelings

Hope this helps!

3 0

2 years ago

Read 2 more answers

What is the difference between algorithm and flowchart

Tomtit [17]

Flowchart - diagram created by different shapes to show flow of data
algorithm - step by step procedure to solve the problem

A flowchart is a representation of an algorithm

5 0

2 years ago

Is the app scener safe? its a chrome webstore app on computer.

Sophie [7]

Answer:

Maybe

Explanation:

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5 0

2 years ago

Matlab In this assignment you will write a function that will calculate parallel resistance for up to 10 parallel resistors. Cal

Ket [755]

Answer:

The complete Matlab code along with step by step explanation is provided below.

Matlab Code:

function Req=ParallelR(Number)

Number=input('Please enter the number of resistors: ');

if Number>10 | Number<=0

disp('Invalid input')

return

end

R=0;

for i=1:Number

r=input('Please enter the value of resistor: ');

R=R+1/r;

end

Req=1/R;

end

Explanation:

Parallel resistance is given by

$\frac{1}{Req} = \frac{1}{R_{1}} + \frac{1}{R_{2}} + \frac{1}{R_{3}}...+\frac{1}{R_{N}}$

First we get the input from the user for how many parallel resistors he want to calculate the resistance.

Then we check whether the user has entered correct number of resistors or not that is from 1 to 10 inclusive.

Then we run a for loop to get the resistance values of individual resistors.

Then we calculated the parallel resistance and keep on adding the resistance for N number of resistors.

Output:

Test 1:

Please enter the number of resistors: 3

Please enter the value of resistor: 10

Please enter the value of resistor: 20

Please enter the value of resistor: 30

ans = 60/11

Test 2:

Please enter the number of resistors: 11

Invalid input

Test 3:

Please enter the number of resistors: 0

Invalid input

8 0

2 years ago