Patch releasing

hi,
what is patch releasing and version controlling? where they are used?
can any one help me please.
narendra

Narendra,
Patch release is something if you have built a package or a code and later on you changed few things in it, it is called a patch release of that package or code.Version Controlling is to control the versions released of a particular package or code you have developed.Say once you started working on a code , you call it Version 1, then when you made modifications to it you can call it version 1.1 or version 2 depending on how you want to name it.Also you can use various tools such as VSS, CVS etc for version controlling.Version Control helps you work on the latest copy of code at all times.webMethods packages also can be patch released or you can create different versions too using Administartor screen–>Packages.

HTH…

Thanks,
Puneet Verma