What is…
Vector Database
Classic search systems (full-text search, SQL) find documents that contain exactly the searched terms. A vector database works differently: each document is converted into a high-dimensional numerical vector by an AI model (embedding). Similar content is geometrically close in vector space.
When a search query arrives, the query is also converted into a vector, and the system finds documents whose vectors are most similar to the query — regardless of whether exactly the same words are used. This enables semantic search: a question about ‘vacation policy for remote work’ will also find documents using the terms ‘home office’ and ‘time off in lieu’.
In a RAG architecture, the vector database is the central component: it contains all indexed enterprise documents as embeddings and delivers the most relevant text passages to the language model when a question arrives. Silent AI includes an integrated vector database — no external system is required.