> For the complete documentation index, see [llms.txt](https://docs.qatts.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.qatts.com/advanced-data-types.md).

# Advanced Data Types

- [QData](https://docs.qatts.com/advanced-data-types/qdata.md): A QData contains values on basis of key and value pairs, Each pair of key and value is called as an entry.