不知谁用delphi写的三层架构程序，很简单的一个案例，研究三层的可以入门参考下！,Do not know who wrote the three-tier structure with the delphi process, a very simple case studies refer to the following three levels that can be started!

Rave报表入门,介绍Rave编写的基本知识和入门案例-TTread program

Delphi DelphiX的开发案例，新手入门引导案例-Development Case Delphi Delphi, the beginners guide Case