파워빌더 교안 2

목차

1. What Is PowerBuilder?

2. Graphical User Interface

3. Event-Driven Programming

4. Object-Oriented Programming

5. Encapsulation

6. Relational Databases

7. PowerBuilder Environment

본문내용

Summary
An event is an action initiated by the user or the system.
An object is any item that combines characteristics (properties) and behaviors (methods).
Scripts describe the processing that should take place when an event occurs.
Encapsulation prevents users from seeing the internal workings of an object.
Summary
A GUI facilitates communication between the application and the user, provides consistency, and is easier to learn.
PowerBuilder is a powerful, professional client / server application development tool for the graphical environment.
The user controls the flow of processing in event-driven programming.
Summary
A “class” is the definition of an object that specifies its properties and methods, similar to a blueprint.
Inheritance is an object-oriented feature whereby one class definition incorporates all or part of another class definition to allow reuse of common features across descendent objects.
An inheritance hierarchy generally includes base, abstract, and concrete classes.
A well-designed nonvisual user object hierarchy is essential for building an object-oriented application.

키워드

파워빌더,   교안,   Graphical,   Interface,   Programming