RAG with database routing - first initialization

rag_tutorials/rag_database_routing/README.md

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+# RAG Database Router Demo
+
+This demo showcases RAG (Retrieval Augmented Generation) with database routing capabilities. The application allows users to:
+
+1. Upload documents to three different databases:
+   - Product Information
+   - Customer Support & FAQ
+   - Financial Information
+
+2. Query information using natural language, with automatic routing to the most relevant database.
+
+## Setup
+
+1. Create a virtual environment: