I have a class to track data changes.
As it becomes slower and slower to find last changes I think I need an index.
The 2 classes are just simplified reality.
Class Rick.ChangeItem Extends %SerialObject
Property Subject As %String;
Property Author As %String;
Property Change As %TimeStamp;
Class DC.listItem Extends (%Persistent)
Property Title As %String;
Property Changes As List Of Rick.ChangeItem ;
/// where & how create the index ?