The union of two tables is basically the total of the two tables, so "or" questions would be my guess.
This is false.
What is cardinality?
Cardinality refers to the entity instances for which it is eligible to participate in a relationship instance. There are two types of cardinality, maximum and minimum.
What is maximum cardinality?
- The maximum cardinality of a relationship is the maximum number of instances of entity B that may be associated with each instance of entity A.
- Maximum cardinality: maximum number of entity instances that can participate in a relationship.
- One-to-One [1:1]
- One-to-Many [1:N]
- Many-to-Many [N:M]
To know more about maximum cardinality , refer:
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The best thing to do when an error message appears when it is not supposed to, as in if you are blocked by an administrator and it appears then its supposed to, it is best to contact someone who can investigate whether or not something is happening to your computer. That could be a parent, if they are good with computers, or just tech support at a store, provided they also know computers. Most of the time your computer just makes a mistake so nothing to worry about, but make sure to have it checked just to be sure.
Answer:
// code in C++.
#include <bits/stdc++.h>
using namespace std;
// main function
int main()
{
// variables
int length=10,height=7,width=5;
// find the volume of
int vol=length*height*width;
// find the surface area
int sa=2*(length*width+length*height+height*width);
// find the perimeter
int peri=4*(length+width+height);
// print the volume
cout<<"Volume is: "<<vol<<" cm^3."<<endl;
// print the surface area
cout<<"Surface area is: "<<sa<<" cm^2."<<endl;
// print the perimeter
cout<<"Perimeter is: "<<peri<<" cm."<<endl;
return 0;
}
Explanation:
Declare and initialize length=10, width=5 and height=7.calculate volume by multiply length, width and height and assign to variable "vol".Then find the surface area as 2*(length*width+length*height+height*width) and assign it to variable "sa".Then find the perimeter as 4*(length+width+height) and assign to variable "peri". Print the volume, perimeter and surface area.
Output:
Volume is: 350 cm^3.
Surface area is: 310 cm^2.
Perimeter is: 88 cm.
Answer:
Software reuse is the technique through which updating the software system through the already defined components or assets of the software.This helps in increasing the productivity ,cost decrement , quality improvement etc.
But in actual case, the software reuse still persist high cost due to modification of inflexible designing of software .It also costs more than expected for the maintenance and training of software.
The security of the software is always at risk because of the usual and advanced hacking and attacking by the hackers even when the protect of software is high.Thus, these statements verify that the benefits of cost and security of software is not actually realized.
