I found this:
https://help.salesforce.com/apex/HTViewSolution?id=000003781&language=en_US

Is this also related to the REST API? If so, how can I achieve the same results with the REST API?
Thanks,
Uzi
 

Is there an API that I can use to update records in a a transaction?
- if I update 10 records - either they all fail (no update) or all succeed. (so if one of them fails due to a validation issue, they all fail)

Is there an API that I can use to update records in a a transaction?
- if I update 10 records - either they all fail (no update) or all succeed. (so if one of them fails due to a validation issue, they all fail)