一个书中的Delphi实例，结合SqlServer实现的小型交易程序，多窗体查询，面向Delphi初学者，源代码也是可以直接在Delphi环境下编译的，有一定借鉴价值。-A Delphi example in the book, combined with a small trading program SqlServer implementation, multi-form queries for Delphi beginners, the source code can also be directly under the Delphi compiler environment, there is a certain reference value.