Explanatory Question
What is a class extension?
Read the answer carefully and go through the related questions on the right side to improve your understanding of this topic.
A class extension allows you to extend business logic of an existing class or table without changing its original implementation.
First read the answer fully, then try to explain it in your own words. After that, open a few related questions and compare the concepts. This method helps you remember the topic for a longer time and improves exam preparation.