Websphere Adapter types

Who can explain the difference between MQ Connections and MQ Transactional Connections and when to use each one?

Thank you

Refer to the documentation: page 69 - [URL]http://techcommunity.softwareag.com/ecosystem/documentation/webmethods/adapters_estandards/Adapters/WebSphere/6-5_WebSphere_MQ_Adapter_Install_and_Users_Guide.pdf[/URL]

-Senthil