What is the difference between %ID and ID in a database table? Both seem to reference the same column labelled ID.
For context, I am trying to create a viewer class for an existing persistent class.
Let us call the persistent class A, with SqlTableName = OldA.
The viewer class will be B with SqlTableName = A and ViewQuery = {select %ID, <other fields> from <some other class with the same fields as A>}


I was understanding the cluster configuration supported by the Cache. Have couple of queries around that:
1. In Cache version 2018.2, there is a shrading concept which splits the data of a Master Data server into multiple small data server which store shraded data.