Hi All,

I am pretty new to Galaxy. I would like to understand Galaxy's versioning capability from an end-user perspective (i do not mean the versioning capability that Mercurial offers in Galaxy repo).

I did some research and found the following link mentioned a use case: if an end-user would like to rerun an analysis which was previously run using a different version of the analysis program, then Galaxy will prompt the end-user whether he/she would like to proceed with the new analysis. From this screenshot (in the link), it looks like Galaxy keeps track of the metadata of a output data file such as which analysis program and which version of the code produce it. is my understanding correct?

http://wiki.g2.bx.psu.edu/Tool%20Shed#Galaxy_Tool_Versions

If the answer to my above question is yes, then i have one more question. does Galaxy version the output data as well? What i means is, for example, if the end-user agrees to use a newer version of the code to rerun (answer Yes to Galaxy's prompt), will the newly generated output be marked as version #2 as oppose to the original output (version #1)? Or it will just simply overwrites the previous analysis output file?

Thanks,

Wanmei