Since these attributes are not part of the Address Units table they are not in the attribute table. ![]() ![]() The bulk of the address information lives in the address point layer: Full Address, Municipality, Postal Code, County, etc. This is a good data structure as you don’t want to store and maintain duplicate information in multiple place. The unit table has minimal data in it, just two fields: Unit and ADDR_ID to join it to relate it to the address point record. The Hudson County Addresses data represent a single point feature for each building address and has a related table with individual units, Address Units, in a 1:M relationship. This map has an Address Points layer ( Hudson County Addresses) which represents a single feature for each building address and has a related Address Units table with individual units in a 1:M relationship. To illustrate this, I have created a simple ArcGIS Online web map with New Jersey address data. This two-part post will demonstrate 1) adding attributes from a related layer, and 2) calculating a new attribute from a related layer then 3) on an unrelated layer in the same map using a common attribute, and 4) by performing an on-the-fly spatial overlay. This two-part blog will demonstrate and discuss several ways of using Arcade expressions to add useful information to a layer’s pop-up that do not exist as attributes in the layer itself. One very useful feature is the ability to add content to pop-ups for layers within and ArcGIS Online web map. It allows to you make calculations, perform geometry functions, and dynamically style labels without actually editing your database. ![]() Arcade is a scripting language that Esri developed for use within the ArcGIS platform for creating custom labeling expressions and calculations.
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