Semantic Layers: The Governed Access Plane for the Modern Data Warehouse

AI can’t be trusted on your data without guardrails. This post reframes the semantic layer as the governed access plane for the warehouse—defining metrics, dimensions, entities, and lineage so every query (human or AI) is consistent and explainable. We unpack why determinism matters in a non-deterministic AI world, why text-to-SQL alone isn’t governance, and how next-gen layers must model unstructured signals too. You’ll see how Push.ai’s business semantic layer encodes relationships, metadata, and synonyms to align AI with business truth, resolve intent, and enforce access. The result: reliable, reproducible insights—and an active reasoning layer that lets AI explore boldly within safe, shared definitions.