# Coding Challenge #123 - Database Driven LLM Wiki

DevFeed: [Coding Challenge #123 - Database Driven LLM Wiki](<https://devfeed.tech/articles/coding-challenge-123-database-driven-llm-wiki-29199.md>)

Original publisher: [Read original article](<https://codingchallenges.substack.com/p/coding-challenge-122-database-driven>)

Author: John Crickett

Published: 2026-06-06T08:01:47Z

Content type: tutorial

Language: en

Sources: [Coding Challenges](<https://devfeed.tech/sources/coding-challenges.md>)

Topics: [Wiki](<https://devfeed.tech/topics/wiki.md>), [LLMs](<https://devfeed.tech/topics/llms.md>), [Database](<https://devfeed.tech/topics/database.md>), [Langgraph](<https://devfeed.tech/topics/langgraph.md>), [LangChain](<https://devfeed.tech/topics/langchain.md>), [Retrieval Augmented Generation (RAG)](<https://devfeed.tech/topics/retrieval-augmented-generation-rag.md>)

Tags: [coding](<https://devfeed.tech/tags/coding.md>), [database](<https://devfeed.tech/tags/database.md>), [knowledge-base](<https://devfeed.tech/tags/knowledge-base.md>), [langchain](<https://devfeed.tech/tags/langchain.md>), [langgraph](<https://devfeed.tech/tags/langgraph.md>), [llms](<https://devfeed.tech/tags/llms.md>), [rag](<https://devfeed.tech/tags/rag.md>)

## AI overview

A coding challenge to build a personal LLM wiki that incrementally maintains a structured Markdown knowledge base from curated sources. The proposed implementation uses Oracle AI Database for vector embeddings and full-text indexes, hybrid search for retrieval, LangGraph for workflows, and LangChain for LLM integration.

## Source excerpt

This challenge is to build your own database powered LLM Wiki.