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3 years ago

What is Warehouse schema.

Computers and Technology

1 answer:

anyanavicka [17]3 years ago

6 0

A schema is a collection of database objects, including tables, views, indexes, and synonyms.

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What naming scheme identifies the rows in a worksheet?

masha68 [24]

The naming scheme that identifies the rows in a worksheet is B. 1, 2, 3.
Rows are horizontal, and they are identified by numbers in an Excel worksheet. On the other hand, columns are vertical, and they are identified by letters in the same Excel worksheet.

7 0

3 years ago

Read 2 more answers

Which access database object asks a question about the data stored in a database and displays specific fields and records that a

elena-14-01-66 [18.8K]

The Query object is used to asks a question about the data stored in a database and displays the specific fields and records that answer the question.

In code form, the select command is used for queries.

6 0

3 years ago

Write a program that reads a file name from the keyboard. The file contains integers, each on a separate line. The first line of

Sindrei [870]

Answer:

Explanation:

import java.util.Scanner;

import java.io.*;

public class ArrayProcessing

{

public static void main(String[] args) throws IOException

{

Scanner kb = new Scanner(System.in);

String fileName;

System.out.print("Enter input filename: ");

fileName = kb.nextLine();

File file = new File(fileName);

if(!file.exists())

{

System.out.println("There is no input file called : " + fileName);

return;

}

int[] numbers = inputData(file);

printArray(numbers);

}

public static int[] inputData(File file) throws IOException

{

Scanner inputFile = new Scanner(file);

int index = 1;

int size = inputFile.nextInt();

int[] values = new int[size];

while(inputFile.hasNextInt() && index < values.length)

{

values[index] = inputFile.nextInt();

index++;

}

inputFile.close();

return values;

}

public static void printArray(int[] array)

{

int count = 1;

for (int ndx = 1; ndx < array.length; ndx++)

{

System.out.printf("%5.f\n", array[ndx]);

count++;

}

if(count == 10)

System.out.println("");

}

4 0

4 years ago

10. What may help drivers conserve gasoline?

ki77a [65]

Answer: C. Slowing down gradually

Explanation:

A and B suck up the gas immediately since you are using much more of it. When you brake abruptly, you are not only wasting gas, but you are also damaging your tires. Therefore, the most appropriate answer is C.

I hope this helps!! Pls mark brainliest :)

7 0

2 years ago

Read 2 more answers

The outstanding disk requests are for tracks 6,10,4,20,36,8, and 40 in that order. Assume that the seek time speed is 5 msec/tra

kirill [66]

Answer:

a. FCFS

seek: 9+4+6+16+16+28+32 = 111 cylinders, 555 ms

b. SSTF

seek: 5+16+4+30+2+2+2 = 61 cylinders, 305 ms

c. C-LOOK

seek: 5+16+4+30+2+2+2 = 61 cylinders, 305 ms

Explanation:

a. FCFS: requests are served in the order they are received. It is used when load is low and has long waiting time for long requests queues.

order: (15), 6, 10, 4, 20, 36, 8, 40

seek: 9+4+6+16+16+28+32 = 111 cylinders, 555 ms

b. SSTF: requests are served using shortest seek time first. It minimizes arm movement, and maximizes request rate

order: (15), 20, 36, 40, 10, 8, 6, 4 15 10 8 6 4 40 36 20

seek: 5+16+4+30+2+2+2 = 61 cylinders, 305 ms

c. C-LOOK: requests are served in one direction until when done then reverses. It does not go to end of disk.

Assume maximum track is 50 then reverses

order: (15), 20, 36, 40, (50), 10, 8, 6, 4

seek: 5+16+4+30+2+2+2 = 61 cylinders, 305 ms

4 0

3 years ago