Do all XI Adapters support transactionality?

Do all XI Adapters support transactionality?

Hello,

As the subject tells you, my question is: Do all XI Adapters support transactionality?

I'd like to know this for the following adapters:

- RFC

- IDoc

- File Adapter

- Database (JDBC) Adapter

- SOAP Adapter

- Plain HTTP Adapter

Thanks & Regards,

Bas.