Need Guidance: Database Approach For Lack Of "Triggers"

Hello!

I'm working on migrating a project from Airtable to Appwrite, but I am a little confused about how to handle my schema.

Background: My site is a public listicle, and un-authenticated users fill up various forms to enquire about various properties on the site.

Currently:

I have one table, which we can call 'Form Submissions' (containing user email, and info about the properties they enquiring about)
I have a second table, which we can call 'User Callback Requests' (again, containing user mail, and info specific to their call back requests)

Problem:

I am required to create a new table this time, called "User Activity". The purpose of this table is to be a unique list of user emails, user activity info (incremental count of form Submissions table, as incremental count from Callback Requests table).
The above logic should be triggered automatically update at every document inserted into the two other tables mentioned above.
I know with Postgresql i could've made triggers to handle this, but how do I do this in App Write?

TL;DR

The user is seeking guidance on how to handle schema migration from Airtable to Appwrite. They have three tables: 'Form Submissions', 'User Callback Requests', and a new table called 'User Activity'. They want the 'User Activity' table to be automatically updated whenever a document is inserted into the other two tables. They mention that they are familiar with using triggers in PostgreSQL, but unsure of how to accomplish this in Appwrite. Solution: To achieve this functionality in Appwrite, you can create an Appwrite function that triggers on document creation. Within the function, you can pull the newly updated document and update the 'User Activity

You can create an Appwrite function to trigger on document creation.

In depth guide on functions: https://appwrite.io/docs/functions

Ah! Thanks Stephen!

So I'd basically need to maintain a separate codebase in a sense, to handle this. Got it.

Within the function, Is there a way I can ascertain which document was JUST updated (that triggered this function)? Or do I just need to pull all documents that were created in the last X minutes and ascertain which one triggered the function?