> For the complete documentation index, see [llms.txt](https://docs.flydean.com/spring-framework-documentation5/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.flydean.com/spring-framework-documentation5/dataaccess/4.0orm.md).

# 4.ORM

本节介绍使用对象关系映射（ORM）时的数据访问。