A very popular and enduring request of the ArcGIS Online user community has been to have the ability to symbolize features based on data that’s stored as a related record. Well, Esri has listened- and released in a June 2018 update to ArcGIS Online the ability to use related records data like never before. We now have the ability to symbolize and manipulate our data in ways that we previously limited.
Good relationships are important in Business, Sports, Personal Life...in anything, really. Good relationships are important with GIS data as well. Let's take a look at how relationship classes and related data can aid in the GIS data collection process.
A client from a Water Reclamation Department uses the Collector for ArcGIS app to edit Sanitary Sewer Network data. They requested additional attributes for a Lift Stations layer, as well as the ability to add multiple Pumps to each Lift Station. The solution to this request is a related table in a feature service that allows for editing via the Collector app. This is an overview of the process.