Indexes
Relic allows you to materialize indexes to enable certain query optimisations and to allow for direct index access for specialised high-performance work.
:hashnested hash map:btreenested sorted map:uniquenested hash map that only allows 1 row per key
You shouldn't need to worry about indexes most of the time, as relic creates them for you
for operations that really need them such as :join, :left-join and :fk.