diff --git a/arch/arch.adoc b/arch/arch.adoc
index b8e0896371cd92e83cf31b5f8032f7ea02f2e960..cb23a8e0149c8e23d9b0ba0e539839ab4a7a0b18 100644
--- a/arch/arch.adoc
+++ b/arch/arch.adoc
@@ -28,8 +28,8 @@ Main features:
 |===
 | **ID** | **Requirement** | **Explanation**
 
-| R1 | some | what
-| R2 | requirements | ww
+| R1 | View data sources | View the list of data sources and details on particular ones (web page + api)
+| R2 | Register data sets | Authenticated users should be able register/change data sets with additional metadata
 |===
 
 === Quality Goals
@@ -58,7 +58,7 @@ Main features:
 
 === Business Context
 
-image:business_context.png["Business view"]
+image:datacat.png["Business view"]
 
 === Technical Context
 
diff --git a/arch/images/datacat.png b/arch/images/datacat.png
new file mode 100644
index 0000000000000000000000000000000000000000..01570ad9bf13a677e8c9b250527bc92f57facf48
Binary files /dev/null and b/arch/images/datacat.png differ