Vector search finds resemblance, not proof: where Microsoft Fabric Graph fits
WirelessLife · x · 2026-11-05
A Microsoft dev blog untangles the most confused topic in AI data architecture using a 'municipal information city' metaphor:
- Relational DB = records office: authoritative records and transactions
- Vector DB = similarity radar: finds meaning-close content, but resemblance is not proof — two complaints can sound alike without sharing the same water main
- Knowledge graph defines entities and their relationships
- Microsoft Fabric Graph is the engine for traversing complex paths and patterns across connected data in OneLake
The post stresses these are complementary, not competing, and walks through a civic government scenario showing when graph traversal is needed to verify connections in AI systems.
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