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Oksi-84 [34.3K]
3 years ago
12

What task do the referential integrity settings prevent?

Computers and Technology
2 answers:
Gnom [1K]3 years ago
7 0

Answer:

It is D

Explanation:

It is right on edge.

Cerrena [4.2K]3 years ago
5 0

Answer:

D

Explanation:

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Which of the following SQL statements will display all customers who have not recently placed an order? a. SELECT customer# FROM
JulsSmile [24]

Answer:

The correct option is option 4 from the options indicated below:

Explanation:

The options are as given below

1-SELECT customer# FROM customers

UNION

SELECT customer# FROM orders;

2-SELECT customer# FROM orders

MINUS

SELECT customer# FROM customers;

3-SELECT customer# FROM orders

INTERSECT

SELECT customer# FROM customers;

4-SELECT customer# FROM customers

MINUS

SELECT customer# FROM orders;

Option 1 is not correct as it will provide the list of all the customers whether they have placed order or not.

Option 2 is not correct as it will provide the list of customers who have placed order but are not in the customers table. This will return the empty records.

Option 3 is not correct as it will provide the list of customers who have placed the order.

Option 4 is correct as it will provide the list of customers from the CUSTOMERS table which are not in the Orders table. thus the list of customers who have not placed the order yet.

3 0
3 years ago
Identify and explain the three tiers of web-based applications.
prisoha [69]

In the case of three-tier architecture, the tiers are as follows: Presentation tier (also known as the user interface or the client application) Business logic tier (also known as the application server) Data storage tier (also known as the database server)

This was on google i take no credit for this work

Btw I don´t know if this is what u want

7 0
3 years ago
T F The exit function can only be called from main .
ElenaW [278]

Answer:

FALSE

Explanation:

The exit function is used to terminate or halt the process.

Syntax-

            void exit(int status)  

Exit function (exit()) can be used in any function not only main() and it will terminate your whole process.

<u></u>

<u>Example-</u> C Program

#include<stdio.h>

#include <stdlib.h>  

//  function declaration

float exitexample ( float x );                                

// Driver program

int main( )                

{

 float a, b ;

 printf ( "\nEnter some number for finding square \n");

  scanf ( "%f", &a ) ;

 // function call

 b = exitexample ( a ) ;                      

 printf ( "\nSquare of the given number %f is %f",a,b );  

/*This will not printed as exit function is in exitexample() function*/

}

float exitexample ( float x )   // function definition  

{

 exit(0);    //exit function

   float p ;

  p = x * x ;

return ( p ) ;

}

5 0
3 years ago
Which of the following are correct? I. Hold the middle mouse button to rotate the model on the screen. II. To pan the model, hol
evablogger [386]

Answer:

II and III are correct

Explanation:

The software that the question is referring to here is the computer-aided design (CAD) software called Inventor by Autodesk.

I. Hold the middle mouse button to rotate the model on the screen. False

This will pan the model instead of rotating.

II. To pan the model, hold down the Ctrl key and the middle mouse button. True

Some versions need you to hold down the ctrl key and the middle mouse button to pan, while others is just the middle mouse button then you drag the mouse around. The middle mouse is the scroll wheel on most mice today. You basically, just hold down the scroll wheel as you move the mouse to pan the model.

III. Use the mouse scroll wheel to zoom in and out of the model. True

To zoom in or out, one will need to rotate the mouse scroll wheel forward to zoom in and backward to zoom out.

 

8 0
3 years ago
I need help with this problem please
alina1380 [7]

Answer:

i think its d

8 0
3 years ago
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