topic Re: &quot;Join data based on a predefined relationship class.&quot; Missing in ArcObjects SDK Questions https://community.esri.com/t5/arcobjects-sdk-questions/amp-quot-join-data-based-on-a-predefined/m-p/153978#M3980 <HTML><HEAD></HEAD><BODY><SPAN>Isn't a relate just a relate. Sounds like you need to create a relationship instead. You can't join data using a predefined relationship class if one doesn't exist and a relate isn't a relationship class. You create a relationship class through Arc Catalog. You can do this through the Arc Catalog tab within ArcGIS 10 as long as you don't have an edit session started.</SPAN><BR /><BR /><SPAN>Here is an article on creating </SPAN><A href="http://help.arcgis.com/en/sdk/10.0/arcobjects_net/conceptualhelp/index.html#/Creating_relationship_classes/000100000104000000/">relationship classes</A><SPAN>.</SPAN><BR /><BR /><SPAN>Once you have the relationship class you can use the Join data based on existing relationship class in the join dialog. I suspect the reason you aren't seeing this option is because there are no relationship classes on the layer you're trying to join.</SPAN><BR /><BR /><SPAN>G</SPAN></BODY></HTML> Mon, 17 Oct 2011 22:14:41 GMT GregRieck 2011-10-17T22:14:41Z &quot;Join data based on a predefined relationship class.&quot; Missing https://community.esri.com/t5/arcobjects-sdk-questions/amp-quot-join-data-based-on-a-predefined/m-p/153977#M3979 <HTML><HEAD></HEAD><BODY><SPAN>Used ArcMap to create a relate but when I try to add a join I do not see the ""Join data based on a predefined relationship class" option. Where is it?</SPAN></BODY></HTML> Fri, 14 Oct 2011 21:36:40 GMT https://community.esri.com/t5/arcobjects-sdk-questions/amp-quot-join-data-based-on-a-predefined/m-p/153977#M3979 GeorgeFaraj 2011-10-14T21:36:40Z Re: "Join data based on a predefined relationship class." Missing https://community.esri.com/t5/arcobjects-sdk-questions/amp-quot-join-data-based-on-a-predefined/m-p/153978#M3980 <HTML><HEAD></HEAD><BODY><SPAN>Isn't a relate just a relate. Sounds like you need to create a relationship instead. You can't join data using a predefined relationship class if one doesn't exist and a relate isn't a relationship class. You create a relationship class through Arc Catalog. You can do this through the Arc Catalog tab within ArcGIS 10 as long as you don't have an edit session started.</SPAN><BR /><BR /><SPAN>Here is an article on creating </SPAN><A href="http://help.arcgis.com/en/sdk/10.0/arcobjects_net/conceptualhelp/index.html#/Creating_relationship_classes/000100000104000000/">relationship classes</A><SPAN>.</SPAN><BR /><BR /><SPAN>Once you have the relationship class you can use the Join data based on existing relationship class in the join dialog. I suspect the reason you aren't seeing this option is because there are no relationship classes on the layer you're trying to join.</SPAN><BR /><BR /><SPAN>G</SPAN></BODY></HTML> Mon, 17 Oct 2011 22:14:41 GMT https://community.esri.com/t5/arcobjects-sdk-questions/amp-quot-join-data-based-on-a-predefined/m-p/153978#M3980 GregRieck 2011-10-17T22:14:41Z