diff --git a/entity/Activity_entity/Activity_entity.aod b/entity/Activity_entity/Activity_entity.aod
index e19f6645d2b98ebb33e7c1567ba8c77ea7aada54..33ed911d36e6c3012a6e0e311acdc615689e15af 100644
--- a/entity/Activity_entity/Activity_entity.aod
+++ b/entity/Activity_entity/Activity_entity.aod
@@ -218,25 +218,6 @@
         <element>PROCESS</element>
       </onValueChangeTypes>
     </entityField>
-    <entityOutgoingField>
-      <name>ActivityObjectRelation_dfo</name>
-      <fieldType>DEPENDENCY_OUT</fieldType>
-      <dependency>
-        <name>dependency</name>
-        <entityName>ObjectRelation_entity</entityName>
-        <fieldName>ObjectRelationById_dfi</fieldName>
-      </dependency>
-      <children>
-        <entityParameter>
-          <name>ObjectRelatonId_param</name>
-          <code>%aditoprj%/entity/Activity_entity/entityfields/activityobjectrelation_dfo/children/objectrelatonid_param/code.js</code>
-          <triggerRecalculation v="true" />
-        </entityParameter>
-      </children>
-    </entityOutgoingField>
-    <entityField>
-      <name>AB_OBJECTRELATION_AB_OBJECTRELATIONID</name>
-    </entityField>
     <entityIncomingField>
       <name>ActivityById_dfi</name>
       <fieldType>DEPENDENCY_IN</fieldType>
@@ -265,39 +246,23 @@
       <mandatory v="false" />
       <description>PARAMETER</description>
     </entityParameter>
-    <entityField>
-      <name>AB_OBJECTRELATION_OBJECT2_TYPE</name>
-      <title>Object type</title>
-    </entityField>
-    <entityField>
-      <name>AB_OBJECTRELATION_OBJECT2_ROWID</name>
-      <title>Object</title>
-    </entityField>
   </entityFields>
   <recordContainers>
     <dbRecordContainer>
       <name>db</name>
       <alias>Data_alias</alias>
-      <fromClauseProcess>%aditoprj%/entity/Activity_entity/recordcontainers/db/fromClauseProcess.js</fromClauseProcess>
       <conditionProcess>%aditoprj%/entity/Activity_entity/recordcontainers/db/conditionProcess.js</conditionProcess>
       <orderClauseProcess>%aditoprj%/entity/Activity_entity/recordcontainers/db/orderClauseProcess.js</orderClauseProcess>
       <onDBInsert>%aditoprj%/entity/Activity_entity/recordcontainers/db/onDBInsert.js</onDBInsert>
       <onDBDelete>%aditoprj%/entity/Activity_entity/recordcontainers/db/onDBDelete.js</onDBDelete>
       <linkInformation>
         <linkInformation>
-          <name>f28ac44d-9586-4d5d-881a-d7a850fb85e7</name>
+          <name>4d4e82f5-fd0d-48e0-805a-c713d73dfae0</name>
           <tableName>ACTIVITY</tableName>
           <primaryKey>ACTIVITYID</primaryKey>
           <isUIDTable v="true" />
           <readonly v="false" />
         </linkInformation>
-        <linkInformation>
-          <name>b9f755e6-c68e-4562-a602-4d45101c2b0c</name>
-          <tableName>AB_OBJECTRELATION</tableName>
-          <primaryKey>AB_OBJECTRELATIONID</primaryKey>
-          <isUIDTable v="false" />
-          <readonly v="true" />
-        </linkInformation>
       </linkInformation>
       <recordFieldMappings>
         <dbRecordFieldMapping>
@@ -332,18 +297,6 @@
           <name>CATEGORY.value</name>
           <recordfield>ACTIVITY.CATEGORY</recordfield>
         </dbRecordFieldMapping>
-        <dbRecordFieldMapping>
-          <name>AB_OBJECTRELATION_AB_OBJECTRELATIONID.value</name>
-          <recordfield>AB_OBJECTRELATION.AB_OBJECTRELATIONID</recordfield>
-        </dbRecordFieldMapping>
-        <dbRecordFieldMapping>
-          <name>AB_OBJECTRELATION_OBJECT2_ROWID.value</name>
-          <recordfield>AB_OBJECTRELATION.OBJECT2_ROWID</recordfield>
-        </dbRecordFieldMapping>
-        <dbRecordFieldMapping>
-          <name>AB_OBJECTRELATION_OBJECT2_TYPE.value</name>
-          <recordfield>AB_OBJECTRELATION.OBJECT2_TYPE</recordfield>
-        </dbRecordFieldMapping>
       </recordFieldMappings>
     </dbRecordContainer>
   </recordContainers>
diff --git a/entity/Activity_entity/entityfields/activityobjectrelation_dfo/children/objectrelatonid_param/code.js b/entity/Activity_entity/entityfields/activityobjectrelation_dfo/children/objectrelatonid_param/code.js
deleted file mode 100644
index 4e20be99f02efc740fa51d208cd053774455b946..0000000000000000000000000000000000000000
--- a/entity/Activity_entity/entityfields/activityobjectrelation_dfo/children/objectrelatonid_param/code.js
+++ /dev/null
@@ -1,6 +0,0 @@
-import("system.logging");
-import("system.vars");
-import("system.result");
-
-logging.log("set " + vars.get("$field.AB_OBJECTRELATION_AB_OBJECTRELATIONID"))
-result.string(vars.get("$field.AB_OBJECTRELATION_AB_OBJECTRELATIONID"));
\ No newline at end of file
diff --git a/entity/Activity_entity/recordcontainers/db/conditionProcess.js b/entity/Activity_entity/recordcontainers/db/conditionProcess.js
index fbaa41996f839738d6ea25911d31149121372a97..2ac98d5394e8e4b7582c942222e76c23c15cd48a 100644
--- a/entity/Activity_entity/recordcontainers/db/conditionProcess.js
+++ b/entity/Activity_entity/recordcontainers/db/conditionProcess.js
@@ -3,10 +3,18 @@ import("system.db");
 import("system.result");
 import("Sql_lib");
 import("ObjectRelation_lib");
+import("Context_lib");
 
 var cond = new SqlCondition();
 
-cond.andPrepareVars("AB_OBJECTRELATION.OBJECT2_ROWID", "$param.RowId_param");
+
+var objectRelationCond = SqlCondition.begin()
+                                     .andPrepare("AB_OBJECTRELATION.OBJECT1_TYPE", ContextUtils.getCurrentContextId())
+                                     .and("AB_OBJECTRELATION.OBJECT1_ROWID = ACTIVITY.ACTIVITYID")
+                                     .andPrepareVars("AB_OBJECTRELATION.OBJECT2_TYPE" , "$param.ObjectId_param")
+                                     .andPrepareVars("AB_OBJECTRELATION.OBJECT2_ROWID" , "$param.RowId_param");
+                                     
+cond.and(db.translateStatement(objectRelationCond.buildSql("exists (select 1 from AB_OBJECTRELATION", "1=2", ")")));
 
 cond.andPrepareVars("ACTIVITY.ACTIVITYID", "$param.ActivityId_param");
 if(vars.exists("$param.OnlyInnate_param") && vars.get("$param.OnlyInnate_param"))    
diff --git a/entity/Activity_entity/recordcontainers/db/fromClauseProcess.js b/entity/Activity_entity/recordcontainers/db/fromClauseProcess.js
deleted file mode 100644
index 7a771ce99e46167483f5ad1b87d42097f5055c2b..0000000000000000000000000000000000000000
--- a/entity/Activity_entity/recordcontainers/db/fromClauseProcess.js
+++ /dev/null
@@ -1,7 +0,0 @@
-import("system.vars");
-import("system.result");
-import("system.db");
-import("ObjectRelation_lib");
-
-var objectId = (vars.exists("$param.ObjectId_param") ? vars.get("$param.ObjectId_param") : undefined);
-result.string("ACTIVITY " + db.translateStatement(ObjectRelationUtils.getJoin("ACTIVITY.ACTIVITYID", objectId)));
\ No newline at end of file
diff --git a/entity/ObjectRelation_entity/ObjectRelation_entity.aod b/entity/ObjectRelation_entity/ObjectRelation_entity.aod
index ea3788afa51ecab59f8cda405cf571789371116c..52aac5e6a29c9683389465b35d54af3201914889 100644
--- a/entity/ObjectRelation_entity/ObjectRelation_entity.aod
+++ b/entity/ObjectRelation_entity/ObjectRelation_entity.aod
@@ -62,14 +62,6 @@
       <name>ObjectRelationById_dfi</name>
       <fieldType>DEPENDENCY_IN</fieldType>
       <recordContainer>db</recordContainer>
-      <dependencies>
-        <entityDependency>
-          <name>59707c94-621c-427d-a465-2a08ae268bbb</name>
-          <entityName>Activity_entity</entityName>
-          <fieldName>ActivityObjectRelation_dfo</fieldName>
-          <isOutgoing v="false" />
-        </entityDependency>
-      </dependencies>
     </entityIncomingField>
   </entityFields>
   <recordContainers>
diff --git a/neonView/ActivityPreview_view/ActivityPreview_view.aod b/neonView/ActivityPreview_view/ActivityPreview_view.aod
index 09ac0660648e3472e5f2c33e311f47e48988b28c..eaa45e929fc6184e171a216cc0ad63b6ed15cace 100644
--- a/neonView/ActivityPreview_view/ActivityPreview_view.aod
+++ b/neonView/ActivityPreview_view/ActivityPreview_view.aod
@@ -32,14 +32,6 @@
           <name>b0673d1d-af3d-4daa-b6ec-511f18367e7f</name>
           <entityField>INFO</entityField>
         </entityFieldLink>
-        <entityFieldLink>
-          <name>d57cbf7c-f590-4166-a232-60a43affb9d0</name>
-          <entityField>AB_OBJECTRELATION_OBJECT2_TYPE</entityField>
-        </entityFieldLink>
-        <entityFieldLink>
-          <name>1347066e-16d1-47ba-92e9-8f4aa30326b2</name>
-          <entityField>AB_OBJECTRELATION_OBJECT2_ROWID</entityField>
-        </entityFieldLink>
       </fields>
     </genericViewTemplate>
     <neonViewReference>
diff --git a/others/db_changes/data_alias/data/example_activity/example_activity_gfk.xml b/others/db_changes/data_alias/data/example_activity/example_activity_gfk.xml
index e0e2a2846e2cf7d880fa50c0a59100d82083ec42..5e8d87cc869b37565ac13a59f94a1e899a57e210 100644
--- a/others/db_changes/data_alias/data/example_activity/example_activity_gfk.xml
+++ b/others/db_changes/data_alias/data/example_activity/example_activity_gfk.xml
@@ -20,6 +20,15 @@
             <column name="USER_NEW" value="Admin"/>
             <column name="DATE_NEW" valueDate="2018-08-03T12:02:52"/>
         </insert>
+        <insert tableName="AB_OBJECTRELATION">
+            <column name="AB_OBJECTRELATIONID" value="83337967-5d58-4b17-88c2-2aeefa130c21"/>
+            <column name="OBJECT1_TYPE" value="Activity_context"/>
+            <column name="OBJECT1_ROWID" value="661a7b87-68ae-4d52-bc22-6bf96184e6fe"/>
+            <column name="OBJECT2_TYPE" value="Pers_context"/>
+            <column name="OBJECT2_ROWID" value="6be18a7e-e7fa-11e8-9f32-f2801f1b9fd1"/>
+            <column name="USER_NEW" value="Admin"/>
+            <column name="DATE_NEW" valueDate="2018-08-03T12:02:52"/>
+        </insert>
         <insert tableName="ACTIVITY">
             <column name="ACTIVITYID" value="9dda39bf-966c-4560-be03-5ddbbc1da84a"/>
             <column name="SUBJECT" value="Webinar-Aufzeichnung"/>
diff --git a/others/db_changes/data_alias/data/example_org/ORG_gfk.xml b/others/db_changes/data_alias/data/example_org/ORG_gfk.xml
index 6090a887fa8a45a2d31629d7347405a1b781ad03..b3c8c49ca9218a155e7161293fec640eb03484b6 100644
--- a/others/db_changes/data_alias/data/example_org/ORG_gfk.xml
+++ b/others/db_changes/data_alias/data/example_org/ORG_gfk.xml
@@ -65,16 +65,6 @@
             <column name="ADDRESS" value="Wilhelm-Straße"/>
             <column name="DISTRICT" value="Oberbayern"/>
         </insert>
-        <insert tableName="ACTIVITY">
-            <column name="ACTIVITYID" value="de410a35-bcab-407e-9d60-7a65f028159b"/>
-            <column name="USER_NEW" value="admin"/>
-            <column name="DATE_NEW" valueDate="2018-08-03T12:02:52"/>
-            <column name="SUBJECT" value="Produktpalette"/>
-            <column name="INFO" value="seit November neuer Einkäufer bei Schulz. Herr Traum wird unsere Spezifikation aber in jedem Fall auch 1997 festschreiben. Dennoch Vorsicht: Besuch"/>
-            <column name="CATEGORY" valueNumeric="2"/>
-            <column name="DIRECTION" value="i"/>
-            <column name="ENTRYDATE" valueDate="2018-08-03T12:41:22"/>
-        </insert>
         <insert tableName="ACTIVITY">
             <column name="ACTIVITYID" value="de110a33-bcab-407e-9d60-7a65f028159b"/>
             <column name="USER_NEW" value="admin"/>
@@ -134,12 +124,6 @@
                     <param value="de110a33-bcab-407e-9d60-7a65f028159b" />
                 </whereParams>
             </delete>
-            <delete tableName="ACTIVITY">
-                <where>ACTIVITYID = ?</where>
-                <whereParams>
-                    <param value="de410a35-bcab-407e-9d60-7a65f028159b" />
-                </whereParams>
-            </delete>
             <delete tableName="ADDRESS">
                 <where>ADDRESSID = ?</where>
                 <whereParams>
diff --git a/process/ObjectRelation_lib/process.js b/process/ObjectRelation_lib/process.js
index a86e5e08c9838eb1cd19d66b2f9f1dcf60abd8a1..9a4604f1bfbf6988c22afb972b8237a9fa02bcfa 100644
--- a/process/ObjectRelation_lib/process.js
+++ b/process/ObjectRelation_lib/process.js
@@ -11,41 +11,4 @@ import("Sql_lib");
  */
 function ObjectRelationUtils() {}
 
-/**
- * Returns a join as prepared sql for joining something with the Objectrelation table.
- * (Note that the pObjectType2 comes before pObjectType1 because pObjectType1 is the default value most times. -> less needed undefined in method call -> cleaner code)
- * 
- * @param {String} pDbRowIdField1 the DB-Field of the rowid to join with. Provide it as: "TABLENAME.COLNAME"<br>Be carefull! No SQL will be escaped. Do not pass strings which can be altered by an user! (SQL-injection)
- * @param {String} [pObjectType2=undefined] the SECOND object type.
- * @param {String} [pObjectType1=ContextUtils.getCurrentContextId()] The FIRST object type. if not provided the current context will be used
- * 
- * @return {Array} prepared adito-sql statement ["SQL", [[param, type], [param, type], ...] 
- * 
- * @example 
- * var objectId = (vars.exists("$param.ObjectId_param") ? vars.get("$param.ObjectId_param") : undefined);<br>
- * result.string("ACTIVITY " + db.translateStatement(ObjectRelationUtils.getJoin("ACTIVITY.ACTIVITYID", objectId)));
- */
-ObjectRelationUtils.getJoin = function(pDbRowIdField1, pObjectType2, pObjectType1) 
-{
-    // use current context as first context, if not defined
-    if (pObjectType1 == undefined)
-        pObjectType1 = ContextUtils.getCurrentContextId();
-    
-    var joinCondition = SqlCondition.begin().andPrepare("AB_OBJECTRELATION.OBJECT1_TYPE", pObjectType1);
-    
-    if (pDbRowIdField1 != undefined && pDbRowIdField1)
-    {
-        joinCondition.and("AB_OBJECTRELATION.OBJECT1_ROWID = " + pDbRowIdField1);
-    }
-    else
-    {
-        throw new Error("ObjectRelationUtils.getRecordJoin: No pDbIdField1 given.")
-    }
-    
-    if (pObjectType2 != undefined && pObjectType2)
-    {
-        joinCondition.andPrepare("AB_OBJECTRELATION.OBJECT2_TYPE", pObjectType2);
-    }
-    
-    return joinCondition.buildSql(" join AB_OBJECTRELATION on " , "1=2", undefined, false);
-}
+// TODO
\ No newline at end of file