Aggregation: The aggregation relationship is also known as “has-a” relationship. The aggregation relationship states that objects of one class contain objects of a different class. Consider a quiz, which consists of questions. It can be said that the class “Quiz” aggregates the class “Question” because each quiz has one or more questions. In the UML notation, a line with a diamond-shaped symbol attached to the aggregating class denotes aggregation Inheritance: Inheritance is the concept of inheriting the members and properties of a base class from the derived class. The main advantages of inheritance are, Code reusability and fast implementation. Reduces the size of the program code. There are five types of inheritance: Single inheritance Multiple inheritance Hierarchical inheritance Multilevel inheritance Hybrid inheritance If a subclass inherits a base class, then the member functions and data members of the super class can be accessed by the derived class. But the derived class does not inherit the constructors from the base classes; each derived class should contain individual constructors.

Question

Want to see the full answer?

Answer 1

Question

Chapter 12, Problem 5RE

Program Plan Intro

Aggregation:

The aggregation relationship is also known as “has-a” relationship.

The aggregation relationship states that objects of one class contain objects of a different class.

Consider a quiz, which consists of questions. It can be said that the class “Quiz” aggregates the class “Question” because each quiz has one or more questions.

In the UML notation, a line with a diamond-shaped symbol attached to the aggregating class denotes aggregation

Inheritance:

Inheritance is the concept of inheriting the members and properties of a base class from the derived class.

The main advantages of inheritance are,

Code reusability and fast implementation.

Reduces the size of the program code.

There are five types of inheritance:

Single inheritance

Multiple inheritance

Hierarchical inheritance

Multilevel inheritance

Hybrid inheritance

If a subclass inherits a base class, then the member functions and data members of the super class can be accessed by the derived class.

But the derived class does not inherit the constructors from the base classes; each derived class should contain individual constructors.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

Click the ____ option button in the Mail Merge task pane to use an Outlook contact list as a data source for a merge. Question 11Select one: a. Use Outlook contacts list b. Select from Outlook contacts c. Select Contacts d. Mail Merge Recipients

A(n) ____ cannot be selected as the document type in the Mail Merge task pane. Question 9Select one: a. Letter b. Directory c. Fax d. E-mail message

Consider a Superstore Database which consists of 3 tables, Orders, Returns, and Managers. The CSV files have been provided along with this DOC file in the Midterm 2 Link in the Moodle. Answer the questions as below: Use the created table as in the provided SQL query file, solve the problems as mentioned below. You will have to import the respective CSV files of the above created tables as without them, it is impossible to solve the questions below. If you are not able to upload the files successfully, do not leave the query questions. Just write the query to the best of your knowledge. Do not copy. To be graded for the screenshot answer, you must upload the CSV properly and paste the resulting screenshot of the queries as asked. Write Query to Find out which Product Sub-Category has a sum of Shipping Cost to sum of Sales ratio > 0.03.