进一步阅读¶
Further Reading
下列部分是本教程中讨论的主要顶级部分，详细介绍了这些概念，并描述了每个子系统的更多功能。
Core 基本参考
ORM 基本参考
The sections below are the major top-level sections that discuss the concepts in this tutorial in much more detail, as well as describe many more features of each subsystem.
Core Essential Reference
ORM Essential Reference