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

# Data base

- [Data Structures](https://readme.directual.com/data/data-structures.md): This is the fundamental part of any app 🏰
- [System Structures](https://readme.directual.com/data/data-structures/system-structures.md)
- [Data Types](https://readme.directual.com/data/data-types.md)
- [Markdown Cheat Sheet](https://readme.directual.com/data/data-types/markdown-cheatsheet.md)
- [Indexing Fields](https://readme.directual.com/data/data-types/indexing-of-the-fields.md)
- [Formatting Date/Time](https://readme.directual.com/data/data-types/formatting-date-time-data.md)
- [Directual Query Language (DQL)](https://readme.directual.com/data/directual-query-language-dql.md): Use advanced search and filtering 🔎
- [Import and Export](https://readme.directual.com/data/import-and-export.md): From Directual to XLS and back
- [Import API](https://readme.directual.com/data/import-and-export/import-api.md)
- [File Storage](https://readme.directual.com/data/file-storage.md): Store all your files 📦
- [API for File Storage](https://readme.directual.com/data/file-storage/api-for-file-storage.md)