A ____________ is the intersection of a column and row in an excel spreadsheet.

_____ is a problem-solving technique where each problem in a database is stored with a description and keywords that identify it

babymother [125]

Answer:

Case-based reasoning.

Explanation:

A database management system (DBMS) can be defined as a collection of software applications that typically enables computer users to create, store, modify, retrieve and manage data or informations in a database. Generally, it allows computer users to efficiently retrieve and manage their data with an appropriate level of security.

A data dictionary can be defined as a centralized collection of information on a specific data such as attributes, names, fields and definitions that are being used in a computer database system.

In a data dictionary, data elements are combined into records, which are meaningful combinations of data elements that are included in data flows or retained in data stores.

This ultimately implies that, a data dictionary found in a computer database system typically contains the records about all the data elements (objects) such as data relationships with other elements, ownership, type, size, primary keys etc. This records are stored and communicated to other data when required or needed.

Basically, when a database management system (DBMS) receives data update requests from application programs, it simply instructs the operating system installed on a server to provide the requested data or informations.

Case-based reasoning is a problem-solving technique where each problem in a database is stored with a description and keywords that identify it. It is typically based on cognitive science and artificial intelligence.

7 0

3 years ago

What type of computer would integrate the system unit with the display and keyboard?

kolbaska11 [484]

Pc
hope this helps have a good day

3 0

3 years ago

Develop a CPP program to test is an array conforms heap ordered binary tree. This program read data from cin (console) and gives

mafiozo [28]

Answer:

Following are the code to this question:

#include<iostream>//import header file

using namespace std;

int main()//defining main method

{

int ar[7];//defining 1_D array that stores value

int i,x=0,l1=1,j; //defining integer variable

for(i=0;i<7;i++)//defining for loop for input value from user ends

{

cout<<"Enter a Number: ";//print message

cin>>ar[i];//input value in array

if(l1<=2 && i>0)//using if block that checks the array values

{

x++;//increment the value of x by 1

}

if(l1>2 && i>0)//using if block that checks the array values

{

l1=l1-2;//using l1 variable that decrases the l1 value by 2

}

j=i-x;//using j variable that holds the index of the root of the subtree

if(i>0 && ar[j]>ar[i])// use if block that checks heap condition

{

l1++; //increment the value of l1 variable

}

if(i>0 && ar[j]<ar[i])// using the if block that violate the heap rule

{

cout<<ar[i]<<" "<<"Violate the heap";//print message with value

break;//using break keyword

}

return 0;

}

Output:

1)

Enter a Number: -15

Enter a Number: -5

-5 Violate the heap

2)

Enter a Number: 45

Enter a Number: 0

Enter a Number: 55

55 Violate the heap

Explanation:

In the above-given C++ language code, an array "ar" and other integer variables " i,x,l1, j" is declared, in which "i" variable used in the loop for input values from the user end.
In this loop two, if block is defined, that checks the array values and in the first, if the block it will increment the value of x, and in the second if the block, it will decrease the l1 value by 2.
In the next step, j variable is used that is the index of the root of the subtree. In the next step, another if block is used, that checks heap condition, that increment the value of l1 variable. In the, if block it violate the heap rule and print its values.

5 0

3 years ago

your business has a web server that has suddenly become unresponsive. when you study the server's logs there are a huge number

kvasek [131]

there's a chance the web server could quite possibly be backed up from all the requests and not being cleaned or updated often

8 0

3 years ago

Read 2 more answers

write a program that keeps names and email addresses in a dictionary as key-value pairs. the program should display a menu that

erma4kov [3.2K]

To write a program that keeps names and email addresses in a dictionary as key-value pairs check the code given below.

<h3>What is key-value pairs?</h3>

In a key-value pair, two related data elements are combined: a value, which is a variable that belongs to the set (for example, male/female, green, 100), and a key, which is a constant that defines the data set (for example, gender, color, price).

A key-value pair could look something like this when fully formed:

gender = male

color = green

price > 100

↓↓↓//<u>Python code</u>//↓↓↓

import pickle

import sys

try:

f=open('email.dat','rb')

d=pickle.load(f)

f.close()

except:

d={}

while True:

print('\n1. Find a email address')

print('2. Add name and email address')

print('3. Change an email address')

print('4. Delete an email address')

print('5. Exit\n')

choice=input('\nEnter a choice: ')

if choice:

choice=int(choice)

else:

print('\nEnter a number')

continue

if choice == 1:

while True:

name=input('\nEnter the name ')

if name:

if name in d:

print('\n%s is the email id of %s \n' % (d[name],name))

break

else:

print('\n Email not found \n')

break

else:

print('\nName cannot be empty\n')

continue

elif choice==2:

while True:

name=input('\nEnter the name ')

if name:

break;

else:

print('\nName cannot be empty \n')

continue

while True:

email=input('\nEnter the email address ')

if email:

d[name]=email

break

else:

print('\nEmail cannot be empty\n')

continue

elif choice==3:

while True:

name=input('\nEnter the name to change the email address ')

if name:

if name in d:

email=input('\nEnter the new email address ')

d[name]=email

print('\nEmail address changed \n')

break;

else:

print('\nName not found \n')

break

else:

print('\nName cannot be empty \n')

continue

elif choice == 4:

while True:

name=input('\nEnter the name to remove ')

if name:

if name in d:

del d[name]

print('\nName and Email address removed \n ')

break;

else:

print('\nName not found \n')

break

else:

print('\nName cannot be empty\n')

continue

elif choice == 5:

f=open('email.dat','wb')

pickle.dump(d,f)

f.close()

sys.exit()

else:

print('\nEnter a valid choice ')

Learn more about key-value pair

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3 0

1 year ago