nav[aria-label="Primary Navigation"] { padding: 0; & ul { list-style: none; width: 100%; display: flex; flex-direction: row; justify-content: start; align-items: start; gap: 30px; padding: 0; & li { margin: 0; } & ul li { list-style: none; } } }

Datos relacionados en ArcGIS

MichaelKelly

<\/HEAD>

Durante los últimos meses, he estado trabajando bastante con datos relacionados en ArcGIS Online y aplicaciones asociadas. En este blog, voy a discutir algunas de mis experiencias para ayudar a otros a obtener una mejor comprensión de las capacidades disponibles para ellos y cómo pueden configurarse.<\/P>

<\/P>

¿Qué es Related Data<\/EM>?<\/STRONG><\/SPAN><\/P><\/P>¡La respuesta está en su nombre! Related data es datos que tienen una asociación o relación con otro conjunto de datos. Creo que la forma más fácil de explicar related data es con un ejemplo real:<\/P><\/P>Supongamos que estás recopilando datos de viviendas en un área particular. Quieres recopilar datos sobre la casa en sí, por ejemplo su dirección, tipo, condición, fecha de construcción, etc. También quieres recopilar datos sobre los residentes en cada casa. Para cada residente, quieres recopilar su nombre, fecha de nacimiento, ocupación, etc. Algunas casas obviamente tendrán múltiples residentes. Si almacenaras todos estos datos en una sola tabla, tendrías que tener una lista infinita de campos para los residentes (nombre del residente uno, fecha de nacimiento del residente uno, ocupación del residente uno, nombre del residente dos, fecha de nacimiento del residente dos, ocupación del residente dos, etc.). Esto obviamente es ineficiente e impráctico. Para manejar esto, configuras dos tablas separadas, una para casas y otra para residentes. Configuras un identificador único para cada fila en la tabla de casas y luego para cada residente almacenamos una referencia a esto, lo que significa que puedes mirar una casa y luego verificar qué residentes están relacionados basándose en este valor. En términos de bases de datos, esta estructura tiene una 'cardinalidad' de uno a muchos, donde la casa tiene una asociación o relación con múltiples residentes. Una ilustración de esto se puede encontrar abajo:<\/P><\/P><\/P><\/P>Hay otros dos tipos principales de relaciones; uno a uno y muchos a muchos. Una relación uno a uno se refiere a casos donde un registro está asociado con otro registro. Por ejemplo, un esposo puede estar asociado con su esposa. Una relación muchos a muchos se refiere a casos donde muchos registros están asociados con muchos otros registros. Los estudiantes y las materias son el ejemplo típico que se usa. Un estudiante puede estudiar múltiples materias en la escuela, mientras que una materia puede ser estudiada por múltiples estudiantes.<\/P><\/P>Finalmente, las relaciones también pueden ser anidadas. ¡Puedes querer almacenar datos relacionados sobre datos relacionados! Por ejemplo, puedes querer recopilar información sobre los coches que poseen los residentes. En ese caso, tus datos contendrían información sobre Casas que pueden contener muchos Residentes que pueden poseer muchos Coches. Puedes encontrar más información sobre Relationships y ArcGIS aquí<\/A>.<\/P>

<\/P>

Entonces ¿cómo puedes usar este tipo de estructuras de datos en ArcGIS? Primero diseñas la estructura de datos en tu software de escritorio como ArcGIS Pro\/ArcMap\/Survey123 Connect for ArcGIS. Una vez que tienes la estructura de datos configurada, puedes comenzar a editar los datos. Puedes editar a través de ArcGIS Pro\/ArcMap o puedes publicar en ArcGIS Online o ArcGIS Enterprise y editar los datos mediante las diversas aplicaciones que configures en ArcGIS Online\/Portal for ArcGIS. He preparado algunos videos que demuestran cómo configurar la estructura de datos - esta es típicamente la parte con la que las personas pueden tener dificultades pero espero que los videos te ayuden a comenzar sólidamente. Una vez que tienes la estructura de datos configurada y publicada en ArcGIS Online\/ArcGIS Enterprise, configuras las diversas aplicaciones como de costumbre.<\/P>

<\/P>

Diseñando tu Esquema de Datos<\/STRONG><\/SPAN><\/P><\/P>Related data es compatible cuando se usan <\/SPAN>ArcGIS Online<\/SPAN> capas alojadas o servicios de entidades desde ArcGIS for Server 10.3.1 o posterior. Normalmente estos se diseñan mediante ArcGIS for Desktop (ArcGIS Pro o ArcMap), pero ahora hay una opción para crearlos usando Survey123 Connect for ArcGIS (cuando solo necesitas recopilar entidades puntuales). Al usar related data, se recomienda encarecidamente usar GlobalIDs al definir relaciones. No se recomiendan relaciones mantenidas por el usuario.<\/SPAN> Mira los videos abajo para los flujos de trabajo que normalmente sigo. En cada video se crea el mismo esquema de datos para que puedas comparar su configuración.<\/P><\/P>ArcGIS Pro (enlace al video

aquí<\/A> en caso de que no se muestre correctamente)<\/STRONG><\/P>
<\/P>
https:\/\/www.youtube.com\/embed\/Fo9tP9qkm8k?feature=oembed

Encuentra más publicaciones etiquetadas con

Comentarios

HermanLouie1

Great video on manul method of creating a GeoDB structure for AGOL

I have 1000's already created Houses points in a read-only in a Hosted Feature Layer in AGOL and I don't want users to CRUD the features.

Can I use the same GeoDB Relationship structure with read-only and not use GUID in Houses but a different unique id?
Setup a temporary Houses Feature Layer Ad-hoc for review after, I just wondering what kind of ID to relate back to the Residents Table?

Wolfgang_Grunberg_AZ_DFFM

@MichaelKelly Thank you!

The ArcPro video and this article lead to a breakthrough for me in setting up one-to-many relates in AGOL.

Is there a similarly thorough and intuitive article/video on how to ingest (denormalize) relates in AGOL App Builder, Dashboard, etc.?

UPDATE: AGOL's Classic Map Viewer's Analysis tool allows one to create dynamic (self updating) Hosted Views of feature/table joins. This way you can create a flattened (denormalized) View of your 1:M relates for presentation use (Dashboard, etc.). Another game changer for us.

Suedietrich

Thanks for the very informative post. I am having trouble with configuring the database (fields, domains, and relationships) for my project that requires the public to rank each project ("low priority", "medium priority", and "high priority"). I have 10 recommendations and I want the public to rank each project in order of importance to them (from 1 to 3) so that the final analysis would tell me which project had the "high priority", "medium priority", and "low priority". Thank you in advance.

José_AntonioAnta_Viguera

Hello Rita,
I have the same problem.
Have you managed to fix it how?

Thanks for your help

Laura_0-1775768224427.png

RitaMatildes2

Hi,

I have come across this blog entry which seems really interesting!

I would like to ask for some help regarding editing related records in web appbuilder.

Situation: I have a table of book records and a point feature of locations: N point features for every record on the table (one book mentions N places around the globe and I want to represent each of those places as a point feature related to that book)

In Pro, I have set up a RSC of many to many as I am not able to set a 1:n relationship that allows me to work correctly with a table as origin and feature as destination. Not a very friendly workflow but I can associate N points to one record on the table.

GOAL: in web appbuilder, garantee the possibility of an user to follow this workflow:

- place a point somewhere and fill the attributes of the book on the table

- place a N points in the map , but relate each to the same book (as the book mentions N places)

In the figure below, I have a new point created in the map and the record I wish to associate is selected in the table of attributes. In the popup I have no option to add this selected record ou "call" it somehow (OID, GlobalID....), just add a new record, but this would duplicate the already existing record...

IS this possible? Is this a wrong approach to the problem?

Some light would be highly appreciated!

Thanks in advance.

Rita

JohnRitsko1

When will AGOL support being able to allow access to the related records in the "Manage Label's" using arcade expressions? Right now I can only use my related table with a popup but I require a label with the related information. Thank you.

Something like this would be great if it worked:

$feature.relationships/0/LASTNAME

AndresCastillo

Michael Kelly,

I do not understand what you mean in #1. 'You would have ........'

Can you please expand?

mohamedhamdaoui

First i would say thanks for this all informations, all this steps work very will but in the final when i export my file to ArcGIS Desktop the informations on the table do not display and show me in a tab that i have an error in the colon (Parent guid) so i can't access to this informations of the table.

MichaelKelly

Hi Yaser - glad you like the blog! In answer to your questions:

You would have to add a Global ID to the parent feature class, output the feature class as a table and remove duplicate Parent ID's. Then join this to the child table so you have access to the appropriate Parent ID (new Guid) and copy this into a new Guid field associated with the Child record. Then remove the old relationship and add the new relationship. Note I have not done this, but I think this workflow will work. *First create a copy of the geodatabase so you have a backup.*
You can filter the child records from the webmap, and base Dashboard values on these. With 1-1 relationships, you can add relevant attributes to a popup. With 1-m relationships, you can add statistics of numeric values (sum, min, max) to a popup.

yaserkhouja1

Thank you Mike for this great blog!

Two questions for you please!: 1/ If I already have a feature layer with relation table, but without a global ID. It just have a unique PK, and FK. How can I add the global ID to substitute the current FK?

2/ is there a way to use Esri dashboard or filter widget with the relation tables not the feature layer?

Thanks,

MichaelKelly

Hi Gelcys - I would suggest you continue to progress this with support. My understanding is nested relates are supported but I'm not sure at what version. If you come to a resolution, perhaps follow up here in case others encounter a similar issue.

GelcysWilliams

I have an open ticket with ESRI now to understand how I can use relates and relationship classes published in a map service locally - consumed by ArcGIS Online. The map services are published using 10.2.2 server. We use the service with several relationship classes in CityWorks without issue - but when I bring the map service into ArcGIS Online, we have issues seeing some of the relationships - do I understand correctly that ArcGIS Online can't use relationship classes published in services at 10.2.2? We have a relationship class between a fc and table, and then another two between that table and two other tables. The relationships between the tables is seen on the rest server, but not the one between the fc and table??

FinnianO_Connor

Mike, from what you have described I think I have the very same setup - a feature class with a related table (one-to-many relationship on GlobalID) stored in an ArcSDE geodatabase with a service published to ArcGIS Server which is then added as an item on AGOL. The feature layer is added to a web map which then allows editing. Also the web map is consumed through Collector for online/offline editing.

Cheers,

Finnian

MichaelKelly

Hi Mike - as far as I am aware this should work. It sounds as though the relationships have not been setup correctly given that you can edit existing records (which would already have relevant parent/child fields populated) but not add. I would suggest you get in touch with support to troubleshoot.

It could be worth seeing whether you can add related records via Collector, and whether records are in fact being added, but not being related to the relevant parent - take a look at the table of the child and see if records are being added. Keep in mind that editing must start from the origin and a many-to-many relationship is not currently supported.

sennaa94

Very good blog post, but, the Edit solutions in WebAppBuilder works for online hosted services only. I have a feature service that is hosted on our instance of ArcGIS for Server and then Added as an item to our Org Site, but the same functionality does not work. I am able to edit existing related records, but the Add + button does not work on the Edit widget for my related tables hosted internally and shared with the Org site. Does ESRI have any plans to make sure the same functionality works with internally hosted services? This seems to be something that should have already been implemented in the Edit Widget tool.

MichaelKelly

Hi Finnian O'Connor, thanks for your comment. I don't believe there is currently a way to label based on related data in ArcGIS Online, although you can create charts, etc. You can configure popups to display information from related records - the functionality varies depending on the relationship. You can check out the documentation here.

The only way I can think of to view related data purely in a popup is to use the Edit widget in Web AppBuilder but only allow the viewing of records, not editing. At the moment, the typical workflow lets you click a point to view its attribute information in a popup, and then click a button to open a table with the associated related data.

FinnianO_Connor

Nice blog post, very informative. Do you have a way of labeling features in an ArcGIS Online web map based on the related data? Or getting the data through a popup? It's great to be able to collect the data in a well constructed schema, but to be really useful being able to display/print the data through web maps would be great.

Cheers,

Finnian

Únete a la Conversación

Los miembros registrados pueden publicar, seguir actualizaciones y más. ¿Nuevo aquí? Regístrate para una cuenta gratuita.

Enlaces Rápidos

Community Help
Find useful guides, FAQs, and documents to help you navigate and make the most of Esri Community.