Downloaded the IRISHealth Community Version for ensemble learning but not able to see ENSDEMO Namespace. Not able to figure out how to get it.

Installed the IRIS in my local machine but not able to launch management portal.

Are there any direct command to find the length of subscript of  global variable? Is it possible to code in objectscript to find the maximum length of subscript  in a global variable.

Difference between DO and JOB command and practical use of job in objectscript??

Can somebody give examples of $Order and $Query and there application? When to use $Order and $Query????

What is the best way to learn mirroring? Are there any videos on learnings at InterSystems community?

How we can reduce the size of cache.dat file? Even after deleting the globals of a particular database from management portal size of its  cache.dat file is not reduced.