diff --git a/example/example-DIH/solr/db/conf/db-data-config.xml b/example/example-DIH/solr/db/conf/db-data-config.xml
index c7e60e83aae..3638748ba1d 100644
--- a/example/example-DIH/solr/db/conf/db-data-config.xml
+++ b/example/example-DIH/solr/db/conf/db-data-config.xml
@@ -1,24 +1,24 @@
 <dataConfig>
     <dataSource driver="org.hsqldb.jdbcDriver" url="jdbc:hsqldb:./example-DIH/hsqldb/ex" user="sa" />
-    <document name="products">
-            <entity name="item" pk="ID" query="select * from item"
+    <document>
+            <entity name="item" query="select * from item"
                 deltaQuery="select id from item where last_modified > '${dataimporter.last_index_time}'">
             <field column="NAME" name="name" />
             <field column="NAME" name="nameSort" />
             <field column="NAME" name="alphaNameSort" />
 
-            <entity name="feature" pk="ITEM_ID" 
+            <entity name="feature"  
                     query="select DESCRIPTION from FEATURE where ITEM_ID='${item.ID}'"
                     deltaQuery="select ITEM_ID from FEATURE where last_modified > '${dataimporter.last_index_time}'"
                     parentDeltaQuery="select ID from item where ID=${feature.ITEM_ID}">
                 <field name="features" column="DESCRIPTION" />
             </entity>
             
-            <entity name="item_category" pk="ITEM_ID, CATEGORY_ID"
+            <entity name="item_category"
                     query="select CATEGORY_ID from item_category where ITEM_ID='${item.ID}'"
                     deltaQuery="select ITEM_ID, CATEGORY_ID from item_category where last_modified > '${dataimporter.last_index_time}'"
                     parentDeltaQuery="select ID from item where ID=${item_category.ITEM_ID}">
-                <entity name="category" pk="ID"
+                <entity name="category"
                         query="select DESCRIPTION from category where ID = '${item_category.CATEGORY_ID}'"
                         deltaQuery="select ID from category where last_modified > '${dataimporter.last_index_time}'"
                         parentDeltaQuery="select ITEM_ID, CATEGORY_ID from item_category where CATEGORY_ID=${category.ID}">