See Chapter 6, a rare good book. In developing MIS programs, put a few TQuery in DataModule, then use Query to access data in the program; the program seems ugly, it is difficult to maintain.
This book is specifically written to these issues, the previous chapter data accessor, active domain object, and object / relationship mapping several modes to package the table into objects, and then reference these objects in the program.
Many technologies in the current O / R technology are similar to the model in this book; when you see the book, you can use Orm.Net to practice in practice. It is good.
If you have this book, everyone will communicate.
