I am currently examing table definitions for usage of the secondary indexes and have come across what I take as conflicting information.
In the first source, I'm looking at the DBC.Indices view. The view tells me that one of the secondary indexes (Group_Key) in the LastAccessTimeStamp column says that the index was last accessed on 1/27/2017 17:52:12.
In the second source, I'm looking at the DBQLObjTbl. The most recent CollectTimeStamp here says that the Group_Key secondary index was used on 2/3/2017 12:40:28.
My question is why am I seeing these two different dates? Does the information in these two columns mean different things?