Definition:Retrieval-Augmented Generation (RAG)
Retrieval-Augmented Generation (RAG) is an AI pattern that retrieves facts from private document databases to inform LLM responses.
Detailed Technical Explanation
Business Perspective
RAG grounds AI responses in real company data, preventing hallucinations while keeping data private.
Technical Perspective
Requires document chunking, embedding generation, vector databases (pgvector), and prompt context injection.
Real-World Example
Querying an internal RAG knowledge base for exact policy details across 5,000 corporate PDFs.
Common Architectural Mistakes
- ✗Poor Document Chunking: Splitting text mid-sentence, destroying semantic context for vector search.
Ecosystem Integration
Frequently Asked Questions
Why is RAG better than fine-tuning for dynamic data?
Because RAG vector databases can be updated in seconds when files change without expensive model retraining.
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Related Glossarys
Vector Database
A Vector Database is a specialized database engine built to store, index, and query high-dimensional vector embeddings efficiently.
Vector Embedding
A Vector Embedding is a numerical array representation of text or media that captures semantic meaning in multi-dimensional space.
CQRS (Command Query Responsibility Segregation)
CQRS is a pattern that separates read data operations (Queries) from write data operations (Commands) into distinct models.
Data Warehouse
A Data Warehouse is a relational database system optimized for analytical processing (OLAP) and business intelligence reporting.
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Database Replication copies data from a primary write node to multiple read-replica follower servers in real time.
Database Sharding
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