Real World → DRT
SELECT → Projection Π_i
JOIN → Neighbor communication
GROUP BY → Rank aggregation
SUM / AVG → Reconstruction Σφ_i·C_i·Π_i
DISTINCT → Faithful completion
WHERE ... HAVING → Corruption detection
Your pipelines ARE the operators.
Your databases ARE the comb.
30 years → you already built it.
DagDB — 6-Bounded Ranked DAG Database