Programmer Defined Classes and Objects - Delphi OOP Course Chapter 6

OOP Course :: One way to make a computer program more robust and more amenable to change is to build it in layers. One might have a user interface layer that takes care of the interaction between the user and the program, an application layer that implements the operations required by the application, and a persistence layer that takes care of permanent storage of the data.

Read the full article to learn abou the "Three Layer" model by defining - instantiating your own classes to provide application logic.

Related:

• Delphi Glossary
• The role of the "AOwner" parameter in the Create constructor of Delphi components
• Understanding Delphi Class Methods