https://www.pistack.xyz/tags/bi/ Recent content in Bi on Pi Stack Hugo en-us Mon, 27 Apr 2026 00:00:00 +0000 https://www.pistack.xyz/posts/2026-04-27-cube-vs-rill-vs-apache-kylin-self-hosted-semantic-layer-guide-2026/ Mon, 27 Apr 2026 00:00:00 +0000 https://www.pistack.xyz/posts/2026-04-27-cube-vs-rill-vs-apache-kylin-self-hosted-semantic-layer-guide-2026/ <p>A semantic layer sits between your raw data sources and your BI dashboards, providing a unified, governed definition of metrics, dimensions, and relationships. Instead of duplicating business logic across every dashboard tool, you define it once in the semantic layer and consume it everywhere — via SQL, REST APIs, GraphQL, or native BI connectors.</p>