Translations for translated fields are stored as JSONB values with
Code translations are no longer stored into the database.
They become static and are extracted from the PO files when needed.
New API for flushing to the database and invalidating the cache with
New methods have been added to odoo.models.Model and odoo.api.Environment,
and are less confusing about what is actually done in each case.
See the section SQL Execution.