> For the complete documentation index, see [llms.txt](https://xoops.gitbook.io/xoonips-tutorial/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://xoops.gitbook.io/xoonips-tutorial/1overview/2.-main-features/24metadata_distribution.md).

# 2.4. Metadata distribution

## 2.4.1. Simultaneous search across different external database sites <a href="#id-2-4-1-simultaneous-search-across-different-external-database-sites" id="id-2-4-1-simultaneous-search-across-different-external-database-sites"></a>

* Enable to obtain metadata complying with OAI-PMH
  * Mounted repository and harvester.
  * Metadata format
    * Apply to OAI-DC,JUNII,JUNII2

![Metadata distribution](/files/-LTR30XWYzQq2hi_id5H)

**Figure 1.6. Metadata distribution**