Which cmdlet accesses history buffer commands and inserts them into the windows powershell pipeline?

Write a program in c++ to displaypascal’s triangle?

Harman [31]

C++ Program to Print Pascal's Triangle

#include<iostream> //header file

using namespace std;

//driver function

int main()

{

int r;/*declaring r for Number of rows*/

cout << "Enter the number of rows : ";

cin >> r;

cout << endl;

for (int a = 0; a < r; a++)

{

int value = 1;

for (int b = 1; b < (r - a); b++) /*Printing the indentation space*/

{

cout << " ";

}

for (int c = 0; c <= a; c++) /*Finding value of binomial coefficient*/

{

cout << " " << value;

value = value * (a - c) / (c + 1);

}

cout << endl << endl;

}

cout << endl;

return 0;

}

Output

Enter the number of rows : 5

1

1 1

1 2 1

1 3 3 1

1 4 6 4 1

7 0

3 years ago

[1] Please find all the candidate keys and the primary key (or composite primary key) Candidate Key: _______________________ Pri

AVprozaik [17]

Answer:

Check the explanation

Explanation:

1. The atomic attributes can't be a primary key because the values in the respective attributes should be unique.

So, the size of the primary key should be more than one.

In order to find the candidate key, let the functional dependencies be obtained.

The functional dependencies are :

Emp_ID -> Name, DeptID, Marketing, Salary

Name -> Emp_ID

DeptID -> Emp_ID

Marketing -> Emp_ID

Course_ID -> Course Name

Course_Name -> Course_ID

Date_Completed -> Course_Name

Closure of attribute { Emp_ID, Date_Completed } is { Emp_ID, Date_Completed , Name, DeptID, Marketing, Salary, Course_Name, Course_ID}

Closure of attribute { Name , Date_Completed } is { Name, Date_Completed , Emp_ID , DeptID, Marketing, Salary, Course_Name, Course_ID}

Closure of attribute { DeptID, Date_Completed } is { DeptID, Date_Completed , Emp_ID,, Name, , Marketing, Salary, Course_Name, Course_ID}

Closure of attribute { Marketing, Date_Completed } is { Marketing, Date_Completed , Emp_ID,, Name, DeptID , Salary, Course_Name, Course_ID}.

So, the candidate keys are :

{ Emp_ID, Date_Completed }

{ Name , Date_Completed }

{ DeptID, Date_Completed }

{ Marketing, Date_Completed }

Only one candidate key can be a primary key.

So, the primary key chosen be { Emp_ID, Date_Completed }..

2.

The functional dependencies are :

Emp_ID -> Name, DeptID, Marketing, Salary

Name -> Emp_ID

DeptID -> Emp_ID

Marketing -> Emp_ID

Course_ID -> Course Name

Course_Name -> Course_ID

Date_Completed -> Course_Name

3.

For a relation to be in 2NF, there should be no partial dependencies in the set of functional dependencies.

The first F.D. is

Emp_ID -> Name, DeptID, Marketing, Salary

Here, Emp_ID -> Salary ( decomposition rule ). So, a prime key determining a non-prime key is a partial dependency.

So, a separate table should be made for Emp_ID -> Salary.

The tables are R1(Emp_ID, Name, DeptID, Marketing, Course_ID, Course_Name, Date_Completed)

and R2( Emp_ID , Salary)

The following dependencies violate partial dependency as a prime attribute -> prime attribute :

Name -> Emp_ID

DeptID -> Emp_ID

Marketing -> Emp_ID

The following dependencies violate partial dependency as a non-prime attribute -> non-prime attribute :

Course_ID -> Course Name

Course_Name -> Course_ID

So, no separate tables should be made.

The functional dependency Date_Completed -> Course_Name has a partial dependency as a prime attribute determines a non-prime attribute.

So, a separate table is made.

The final relational schemas that follows 2NF are :

R1(Emp_ID, Name, DeptID, Marketing, Course_ID, Course_Name, Date_Completed)

R2( Emp_ID , Salary)

R3 (Date_Completed, Course_Name, Course_ID)

For a relation to be in 3NF, the functional dependencies should not have any transitive dependencies.

The functional dependencies in R1(Emp_ID, Name, DeptID, Marketing, Date_Completed) is :

Emp_ID -> Name, DeptID, Marketing

This violates the transitive property. So, no table is created.

The functional dependencies in R2 ( Emp_ID , Salary) is :

Emp_ID -> Salary

The functional dependencies in R3 (Date_Completed, Course_Name, Course_ID) are :

Date_Completed -> Course_Name

Course_Name -> Course_ID

Here there is a transitive dependency as a non- prime attribute ( Course_Name ) is determining a non-attribute ( Course_ID ).

So, a separate table is made with the concerned attributes.

The relational schemas which support 3NF re :

R1(Emp_ID, Name, DeptID, Course_ID, Marketing, Date_Completed) with candidate key as Emp_ID.

R2 ( Emp_ID , Salary) with candidate key Emp_ID.

R3 (Date_Completed, Course_Name ) with candidate key Date_Completed.

R4 ( Course_Name, Course_ID ). with candidate keys Course_Name and Course_ID.

6 0

3 years ago

Define a class named ComparableSquare that extends Square (defined above) and implements Comparable. Implement the compareTo met

Alexxx [7]

Answer:

/*********************************************************************************

* (The ComparableCircle class) Define a class named ComparableCircle that *

* extends Circle and implements Comparable. Draw the UML diagram and implement *

* the compareTo method to compare the circles on the basis of area. Write a test *

* class to find the larger of two instances of ComparableCircle objects. *

*********************************************************************************/

public class Exercise_13_06 {

/** Main method */

public static void main(String[] args) {

// Create two instances of ComparableCircle objects

ComparableCircle comparableCircle1 = new ComparableCircle(12.5);

ComparableCircle comparableCircle2 = new ComparableCircle(18.3);

// Display comparableCircles

System.out.println("\nComparableCircle1:");

System.out.println(comparableCircle1);

System.out.println("\nComparableCircle2:");

System.out.println(comparableCircle2);

// Find and display the larger of the two ComparableCircle objects

System.out.println((comparableCircle1.compareTo(comparableCircle2) == 1

? "\nComparableCircle1 " : "\nComparableCircle2 ") +

"is the larger of the two Circles");

}

3 0

3 years ago

What is a good monitor for console gaming? (Any price)

likoan [24]

Answer:

I personally use a alienware

Explanation:

7 0

3 years ago

Read 2 more answers

Jeremy knows that there is a keyboard shortcut in Word, but he does not know what it is. What should Jeremy do to find out what

loris [4]

The correct answer to this question is that Jeremy should use the F1 key.

In Word, the F1 key is the help button that will help Jeremy find any keyboard shortcut that he is looking for. After pressing F1, he can search for what he is looking for. A second option to find a keyboard short would be to perform a simple search on the Internet for what he is looking for.

3 0

3 years ago