In this video, it discusses compute function and how to store value in a field using this functionality and @api.depends operation.
Odoo provides compute function which helps to calculate from some other fields. It is just like any other regular field along with an additional argument compute.
0:36 Field declaring
1:41 Defining @api.depends operation
2:51 Define Compute function and compute the value
4:09 Adding field into XML files of view
4:31 Updating in UI
Which can be stored directly and retrieved directly from a database, and the api operation @api.depends helps to compute the value based on the change in the depends field.