Answer lineage: auditing what an AI agent actually read
The chat transcript records what was said, not what was true. Lineage links an answer to the definition and data behind it.
6 min read
#camada-semantica
8 articles
Semantic layer vs data warehouse: they don't compete
One stores and computes; the other defines what is being computed. There is no NOT NULL for semantics.
7 min read
MCP server vs BI tool: which question is each one for?
A dashboard answers the question already asked; an MCP server answers the one nobody anticipated. Both read the same definition.
7 min read
Why Shopify and GA4 revenue never match
Adobe says it plainly: the two should not match in almost every case. GA4 excludes tax and shipping; Shopify includes both.
8 min read
What is a trusted data layer for AI agents?
Access, definition, freshness and provenance, decided before the question. Connection is solved; trust is what nobody shipped.
7 min read
MCP for e-commerce analytics: expose questions, not tables
The spec makes tools model-controlled and tool annotations untrusted. Your tool surface is the security boundary.
7 min read
Marketing and finance never close the same revenue number
Both numbers are right. The accounting standard recognises revenue on transfer of control; marketing measures at checkout.
8 min read
What is a data contract, and what does it enforce?
A data contract declares shape, guarantees and meaning. On Snowflake, BigQuery and Redshift, a declared primary key is enforced by nobody.
6 min read