A strong thesis statement should answer, but not elaborate on your opinion, or the facts of the central question.
Answer:
True is the correct answer for the above question.
Explanation:
- The software is a collection of instruction which states the computer to how to do a specific work. The software developer only develops the software, but it is used by many users of the software who wants to do some specific task.
- The developer creates a graphical event for users through which the user can use the software of the computer system for his personal use.
- So the above line concludes that the software is for the user only. So the user interaction in software development is necessary which is also said by the question-statement. Hence the question statement is the true statement.
When someone may be giving away something for free.
Answer:
Customer Table
- Customer name
- Customer id
Product Table
- Product id/number (primary key, auto increment)
- Product name
- Product sale price
Transactions Table
- Transaction Id
- Customer Id
- Product id
- Quantity
- Price
- Date
Explanation:
Natalie wants to fetch following information from database
- Look up customer name and sale price
- Sort items in db by product number
To lookup customer name and sale price perform a join on Transactions table and Customer table.Assuming database is build in mysql the query to fetch required results would be
select transction.productId,transaction.customerid,customer.customername from transactions join customer ON
customer.customerid=transcation.customerid
where productid="user provided product id of returned product"
For sorting products by number set produc number in product table a auto increment primary key
Answer:
Encapsulation:-It is the binding of the data and functions so that they works as one unit.
Inheritance:-When one class acquires the property of another class it is called inheritance.
Polymorphism :-It generally means more than one form
Explanation:
Encapsulation:- class is an example of encapsulation it can hold different data types and functions in a single container called class.
class Name{
public:
string first_name;
string last_name;
void Display()
{
cout<<first_name<<" "<<last_name<<endl;
}
};
Inheritance:-The property of a class acquiring the properties of another class is called inheritance.
Now we will inherit the above defined class.
class person: public Name
{
public:
char gender;
int age;
void Display()
{
cout<<first_name<<" "<<last_name<<gender<<age<<endl;
}
};
int main()
{
Name n;
person p;
n.Display();
p.Display();
}
Polymorphism- There are two types of polymorphism:-
1.Run time polymorphism=The values are decided at run time.
2.Compile time polymorphism=The values are decided at compile time.
Example:-In the above example we have function Display() in both the classes.This is an example of compile-time polymorphism. We are deciding at the time of compilation which display to use.
