> 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](https://579198783-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LD6Mk8IMfCUPLQPG759%2Fsync%2F11c8882f9a3eaacd2d4b799bb9a18b17e172d62d.png?generation=1601839797033144\&alt=media)

**Figure 1.6. Metadata distribution**