> For the complete documentation index, see [llms.txt](https://docs.mongoing.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.mongoing.com/mongodb-crud-operations/mongodb-crud-concepts/yuan-zi-xing-he-shi-wu.md).

# 原子性和事务