Document format in broker?

Can anyone tell me in which format the document is stored in broker?

It’s a proprietary format stored within a proprietary file.

What do you need to do?

what do u mean by proprietary format?
and where we can find those proprietary files related to broker ie (the path)?

You should immediately locate and read the Broker Administrator’s guide in webm_home\Broker\doc and maybe the Publish-Subscribe Developer’s Guide in webm_home\Developer\doc\guides.

After reading those guides to get an understanding of the basic concepts of the webMethods Broker, please feel free to post any follow up questions here.