What is document tag in data-config.xml of Solr
<dataConfig>
    <dataSource type="JdbcDataSource" driver="org.gjt.mm.mysql.Driver" url="jdbc:mysql://192.168.1.9:3306/angara" user="dev_user" password="ampliflex" />
    <document>
         <entity name="tdiamonds1" query="select UID_PK, ProductUID, name, price,Weight from tdiamonds">

         </entity>
    </document>
</dataConfig>