Insights23 min read
The Missing Layer: A Structural Gap in the AI Infrastructure Stack
by Jaepil Jeong | April 10, 2026
Between models and hardware lies an invisible structural gap — a data layer that should exist but doesn't. We examine why the current AI infrastructure stack is fragmented, why this is a structural problem rather than a transitional one, and what conditions a proper solution must satisfy. We then present UQA and the Cognica engine as one concrete response to these conditions.
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Tech5 min read
Graph Queries in a Unified Database: From Cypher to Posting Lists
by Jaepil Jeong | March 26, 2026
Graph databases solve relationship-heavy problems elegantly, but adding a separate graph system alongside your relational database creates operational complexity. We explain how Cognica integrates graph queries into its unified algebra, enabling Cypher and SQL to compose in a single transaction without data duplication.
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Insights4 min read
An AI Database That Works Identically On-Device
by Tim Yang | December 23, 2025
We examine the database architecture changes required by on-device AI. Just as SQLite was the answer for on-device computing, on-device AI requires a new database that integrates transactions, analytics, full-text search, and vector search. We explain why Cognica works identically on-device and on servers.
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Insights5 min read
Structural Limitations of Legal Case Search and the Need for Single DB with Vector Search
by Tim Yang | December 9, 2025
This article provides a technical analysis of why legal case search is challenging in the legal services market. We examine the structural characteristics of legal case data and the limitations of existing distributed architectures (RDB + ElasticSearch + Vector DB), and explain why integrated search based on a single database is necessary.



