web
You’re offline. This is a read only version of the page.
close
Skip to main content

Announcements

News and Announcements icon
Community site session details

Community site session details

Session Id :
Power Platform Community / Forums / Power Apps / Data schema, table siz...
Power Apps
Unanswered

Data schema, table size and delegation

(0) ShareShare
ReportReport
Posted on by 85

Hi,

I have read the blog by @Drrickryp  https://powerusers.microsoft.com/t5/News-Announcements/Database-Design-Fundamentals-and-PowerApps-An-Overview/ba-p/184485 and have tried to apply the principles to my data schema for a skills matrix app.  As a test I have created a bunch of tables in Excel and PowerBI seems to like them and I can return data so a good start although I am not sure I got the junction table bit right.  

 

Scenario:  2500 staff,  300 skills / competencies.  Even if each staff member only had 5 skills that would be 12500 rows.

 

The question is:

  1.   Where do I write my data to? - I am currently thinking it will go in the Junction table (hence the doubt about getting it right)
  2.   How do I prevent that table from becoming big and running into delegation issues?

 

schema.png
Categories:
  • v-bofeng-msft Profile Picture
    Microsoft Employee on at

    Hi @Fess67 :

    Firstly,If you are worried about delegation issues, then you should first consider changing the data source.

    The point is Excel is not delegable in powerapps.

    Delegation is supported for certain tabular data sources only. If a data source supports delegation, its connector documentation outlines that support. For example, these tabular data sources are the most popular, and they support delegation:

    Choosing the right data service is the first step to avoid delegation problems

    Secondly,whether it can be delegated also depends on different combinations of certain operations and certain data types in different data sources.Please check these ks:

    To avoid delegation issues, it is necessary to use delegationable combinations of operations and data types.

    I think this link will help you a lot:

    https://docs.microsoft.com/en-us/powerapps/maker/canvas-apps/delegation-overview

    Best Regards,

    Bof

     

  • Fess67 Profile Picture
    85 on at

    Yeah sorry I did not make it clear that the excel was simply a test as it is easier to make the tables in there rather than Sharepoint.  The actual tables will be made in Sharepoint lists.  Thanks for the links.  I think maybe delegation will not trip me up.

  • v-bofeng-msft Profile Picture
    Microsoft Employee on at

    Hi @Fess67 :

    Is there anything else I can help?

    If my answer helps or you have found an other solution, please consider marking it as a solution to help others.

    Best Regards,

    Bof

  • Fess67 Profile Picture
    85 on at

    Thanks for taking the time to respond to my question.  The question is more about the schema as shown in the image.  I am new to database design and worried that I am making something that will break because I have not structured it correctly.  I get that SP lists are not the right platform however it is all I have at the moment so looking to make the best out of a bad deal.

     

    Cheers

  • v-bofeng-msft Profile Picture
    Microsoft Employee on at

    Hi @Fess67 :

    Maybe you can try CDS, creating a relationship can establish a connection between different entities.

    Best Regards,

    Bof

  • Fess67 Profile Picture
    85 on at

    Thanks again.

    Yeah CDS is premium and I am living in a non premium world at the moment so Sharepoint lists it has to be.

Under review

Thank you for your reply! To ensure a great experience for everyone, your content is awaiting approval by our Community Managers. Please check back later.

Helpful resources

Quick Links

Season of Sharing Community Challenge Winners!

Congratulations to our community stars!

Kudos to our 2025 Community Spotlight Honorees

Expanding mentorship, skilling, and AI innovation

Leaderboard > Power Apps

#1
11manish Profile Picture

11manish 342 Super User 2026 Season 2

#2
M Bilal Khan Profile Picture

M Bilal Khan 271

#3
Mohsin Ali Profile Picture

Mohsin Ali 239

Last 30 days Overall leaderboard