A case is to be entered to get access to Cognos. I recommend reaching out to a Designated Support Contact in the district who should be able to open a case on your behalf. We'll get this forwarded to the Cognos group to provide access to Cognos.
If you specify the report's URL, complete with parameters, the report will run. Where it puts its output depends on its Cognos settings.
You can also have a look at the sdk part also..using sdk you can execute the reports using the script and you can save the report outputs locally or to any common share drive..
you will get the sample sdk codes to execute the reports from the ibm developer works website itself.