REST API transactions within TRANSACTION

[Ian Mayo]

Is your feature request related to a problem? Please describe.
It would be useful if it was possible to include a series of REST modifications in a transaction.

Currently only SQL commands can be enclosed within a transaction.

Describe the solution you'd like
The ability to provide a series of REST API calls within a transaction, such that if one modification fails they all are rejected.

Describe alternatives you've considered
It is technically possible to reverse-engineer REST API calls to SQL Statements, particularly when the REST API is generated from the underlying tables.

Additional context
Add any other context or screenshots about the feature request here.