diff --git a/DataArchitectureDiagram.md b/DataArchitectureDiagram.md
index 8db4055..28c26f6 100644
--- a/DataArchitectureDiagram.md
+++ b/DataArchitectureDiagram.md
@@ -7,9 +7,9 @@
TETHYS collects and manages scanned geological maps, spatial data sets, and other types of research outputs.
The general guideline for publishing research data (manual, p. 11-2) is providing information on how to prepare data sources for deposit (helpful for depositors and repository staff):
-- the types of file formats that are acceptable,
+- the types of file formats that are acceptable. All **allowed file fomats** must be enabled by the administrator in the database table **'mime_types'**. Also see (db lookup tables)
- what kind of data can be included in the research data repository,
-- the file upload limits,
+- the file upload limits (512MB),
- what CC licenses can be used,
- the strategy for deleting datasets,
- how to handle the use of external research data,
@@ -22,13 +22,13 @@ The **Metadata format guidelines**
+
 system that is used to manage users
- link_account_roles: This table stores the relationship between users (Accounts) and roles. Each row in this table represents a user that has been assigned a specific role.
-# 7. Preservation systems
+# 7. System Integration
-....
+System Integration with other systems involves integrating the research repository with other systems, such as project management tools, data platforms and reporting tools.
+
+By providing the Open Archives Initiative Protocol for Metadata Harvesting (**OAI-PMH**) any other data provider can harvest TETHYS metadata. An example would be the **Bielefeld Academic Search Engine BASE**: https://www.base-search.net/Search/Results?q=coll:fttethysrdr&refid=dctablede
+
+Matomo is used to track statistics data for TETHYS. Matomo is an open-source web analytics platform that can be used to track user behavior on a website.
diff --git a/data_diagram.drawio.svg b/data_diagram.drawio.svg
index e309608..7047427 100644
--- a/data_diagram.drawio.svg
+++ b/data_diagram.drawio.svg
@@ -1,4 +1,4 @@
-<svg host=){kind=link}