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prisoha [69]
3 years ago
13

Give three reasons why you think ETL functions are mostchallenging in data warehouse environment.

Computers and Technology
1 answer:
adell [148]3 years ago
5 0

Answer:

Because of the nature of the source systems ETL functions are challenging.Reasons are as following:-

1. There are various source systems are very  and contrasting.

2. There is usually a requirement to deal with source systems on different platforms or Operating Systems.

3. Quality of data is uncertain in many old source systems that have developed gradually over time.

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Write a loop that reads c-strings from standard input where the c-string is either "land", "air", or "water". The loop terminate
Anvisha [2.4K]

Answer:

I am writing a C++ code.        

#include <iostream> // for input output functions

using namespace std; // identifies objects like cin cout

int main() { //start of main() function body

string c_string; // stores the string entered by user from land water or air

int land=0; // contains the number of times land string is read in

int air=0; //contains the number of times air string is read in

int water = 0; //contains the number of times water string is read in

cin>>c_string; //reads the string entered by user from air water or land

/*while loop continues to execute until user enters xxxxx or maximum length of a string exceeds 8 */

while(c_string!= "xxxxx" && c_string.length()<=8) {

if(c_string=="land"){ // if string entered by user is land

land = land + 1;} //counts and increments each occurrence of land string by 1

else if(c_string=="air"){// if string entered by user is air

air = air + 1;}// counts and increments each occurrence of string air by 1

else if(c_string=="water"){// if string entered by user is water

water = water + 1;}//counts and increments each occurrence of air by 1

cin>>c_string;}

/* keeps reading the string entered by user from land air or water, until the loop breaks after the user enters xxxxx or user enters a string whose length is greater than 8 */

//prints the number of times land, air and water are read in

cout << "land:"<<land;

cout << endl<<"air:"<<air;

cout << endl<< "water:"<<water; }                      

                                                                                     

Explanation:

Everything is well explained in the comments above.

The program prompts the user to input strings. These strings are either land air or water. The while loop continues to read the input strings until user enters xxxxx or the string entered by user exceeds the length 8. Both these terminating conditions are added in the while loop. After the loop terminates, the number of times land, air and water strings are read is displayed on the output screen. Any other string entered by user other than these 3 is ignored. The program along with the output is attached.

3 0
3 years ago
Which of the following sets of data would be presented best in a histogram.
anastassius [24]
I do not believe you answer is right. I believe it would be B the average montly sales for the big toy company. Only documenting the last month is not enough information to make a histogram, and a histogram asks for information based on one subject not multiple subjects. Asking for the number of each type of candy sold last month would make a normal graph comparing the difference in how much each candy sold, so your answer should be B.
3 0
3 years ago
Select the phrases that apply to Java classes or methods.
oee [108]

Answer:

graficar una lista de entradas

graficar una lista de entradas

crear un nuevo objeto

condiciones de prueba

romper un ciclo

romper un ciclo

Explanation:

7 0
3 years ago
Which type of formatting would you apply to spreadsheet data so that each cell is outlined?
rjkz [21]

Answer:

D. Border

Explanation:

Edge 2020

5 0
2 years ago
What is the difference between ascending order and descending order
Neporo4naja [7]

"Ascending" means starting low and going up.

"Descending" means starting high and coming down.


4 0
3 years ago
Read 2 more answers
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