diff --git a/entity/ObjectRelationType_entity/documentation.adoc b/entity/ObjectRelationType_entity/documentation.adoc
index 9c296c2d48c343163da4a3427b5c27656d4938a9..268b6a73875e0a1b60f9287471a5f693f84a2f5c 100644
--- a/entity/ObjectRelationType_entity/documentation.adoc
+++ b/entity/ObjectRelationType_entity/documentation.adoc
@@ -1,3 +1,14 @@
 = ObjectRelationType_entity
 
-Administrative obsolescence of the object_entity
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+This entity is for administrating the different types of ObjectRelations that can be used with the ObjectTree_entity.
+
+== Database Structure
+
+One complete ObjectRelationType can consist of either one or two rows in the table 'AB_OBJECTRELATIONTYPE', depending on whether the ObjectRelationType is double-sided or not. When there are two rows they share the same 'RELATION_TYPE' and the order of them is determined by the 'SIDE'.
+The flag 'HIERARCHY' determines if the relation between to objects will be hierarchical.
+
+== Entity Structure
+
+In the entity, one row represents a "full" ObjectRelationType, so the database entries that make it up are already joined together. 
+
+NOTE: A "second side" of the ObjectRelationType is not mandatory, if it is not set, only one row in the database is needed. Such a relation type makes sense when a relation is the same regardless from which side you view it (e. g. acquaintance).
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