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pogonyaev
3 years ago
14

Help please helpp im begging

Computers and Technology
1 answer:
NemiM [27]3 years ago
6 0
I think That it is A
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A(n) ____ describes the structure, content, and access controls of a physical data store or database.
kirill115 [55]

A <u>schema </u>describes the structure, content, and access controls of a physical data store or database.

<h3>What is the kind of database that stores data in a different physical location?</h3>

Distributed databases are that are distributed across several physical locations. In distributed databases, the data are placed where they are used most often, but the whole database is available to each licensed user.

<h3>What is the structure of database management system?</h3>

The database system is separated into three components: Query Processor, Storage Manager, and Disk Storage.

To learn more about Distributed databases, refer

brainly.com/question/28236247

#SPJ4

Complete Question is ,

a. relation

b. DBMS

c. schema

d. attribute

6 0
2 years ago
Write a telephone lookup program. Read a data set of 1,000 names and telephone numbers from a file that contains the numbers in
morpeh [17]

Answer:

See explaination

Explanation:

PhoneLookup.java

import java.io.FileReader;

import java.io.IOException;

import java.util.Scanner;

public class PhoneLookup

{

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

{

Scanner in = new Scanner(System.in);

System.out.println("Enter the name of the phonebook file: ");

String fileName = in.nextLine();

LookupTable table = new LookupTable();

FileReader reader = new FileReader(fileName);

table.read(new Scanner(reader));

boolean more = true;

while (more)

{

System.out.println("Lookup N)ame, P)hone number, Q)uit?");

String cmd = in.nextLine();

if (cmd.equalsIgnoreCase("Q"))

more = false;

else if (cmd.equalsIgnoreCase("N"))

{

System.out.println("Enter name:");

String n = in.nextLine();

System.out.println("Phone number: " + table.lookup(n));

}

else if (cmd.equalsIgnoreCase("P"))

{

System.out.println("Enter phone number:");

String n = in.nextLine();

System.out.println("Name: " + table.reverseLookup(n));

}

}

}

}

LookupTable.java

import java.util.ArrayList;

import java.util.Collections;

import java.util.Scanner;

/**

A table for lookups and reverse lookups

*/

public class LookupTable

{

private ArrayList<Item> people;

/**

Constructs a LookupTable object.

*/

public LookupTable()

{

people = new ArrayList<Item>();

}

/**

Reads key/value pairs.

atparam in the scanner for reading the input

*/

public void read(Scanner in)

{

while(in.hasNext()){

String name = in.nextLine();

String number = in.nextLine();

people.add(new Item(name, number));

}

}

/**

Looks up an item in the table.

atparam k the key to find

atreturn the value with the given key, or null if no

such item was found.

*/

public String lookup(String k)

{

String output = null;

for(Item item: people){

if(k.equals(item.getName())){

output = item.getNumber();

}

}

return output;

}

/**

Looks up an item in the table.

atparam v the value to find

atreturn the key with the given value, or null if no

such item was found.

*/

public String reverseLookup(String v)

{

String output = null;

for(Item item: people){

if(v.equals(item.getNumber())){

output = item.getName();

}

}

return output;

}

}

Item.java

public class Item {

private String name, number;

public Item(String aName, String aNumber){

name = aName;

number = aNumber;

}

public String getName(){

return name;

}

public String getNumber(){

return number;

}

}

input.txt

Abbott, Amy

408-924-1669

Abeyta, Ric

408-924-2185

Abrams, Arthur

408-924-6120

Abriam-Yago, Kathy

408-924-3159

Accardo, Dan

408-924-2236

Acevedo, Elvira

408-924-5200

Acevedo, Gloria

408-924-6556

Achtenhagen, Stephen

408-924-3522

Note: Replace all the "at" with at symbol

4 0
3 years ago
50 POINTS!!!
ycow [4]

Answer:

1. -> B.

2. -> C

3. -> A

Explanation:

1. Antennas = help the router fetch and transmit a signal

2. Repeaters = help in increasing the range of signal

3. Adapters = help the device detect a wireless signal

7 0
3 years ago
PLEASE HELP
kap26 [50]

Answer:

dog

Explanation:

The python program has four lists, A, B, C, and E which is a list of the first three lists. Lists are unordered indexed data structures, it is accessed by an index starting from 0 to n (which is the length of the list minus one).

The E list is a list of lists with three list items starting from index zero to two. E[0][1] is used to access the item "dog" in the first list item of the E list.

3 0
3 years ago
A user complains that her computer is performing slowly. She tells you the problem started about a week ago when new database so
motikmotik

Answer/Explanation:

It is best to use Performance Monitor and Process counters to observe performance.

Cheers

6 0
3 years ago
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