The ability to "project some or all of the table's other attributes into a secondary index" smells a bit like a materialized view in the description. I am ofte

The ability to "project some or all of the table's other attributes into a secondary index" smells a bit like a materialized view in the description. I am often thinking in a star-schema direction (too much time data warehousing) rather than normalized designs. For DynamoDB, I stumble around the primary key for such setups given that a rather large subset of the tuple values in a star schema row (plus a timestamp) actually represent the primary (compound) key for the metric measurement. Probably need to re-think all that sometime.