Definition
Vector Database
A specialized database that stores and efficiently searches high-dimensional vector embeddings, enabling semantic similarity search for AI applications.
In Depth
Vector databases are the backbone of RAG systems and agent memory. They store text (or images, audio, etc.) as numerical vectors that capture semantic meaning. When an agent needs to find relevant information, it converts the query to a vector and searches for the most semantically similar stored vectors — finding relevant content even when the exact words don't match. Popular vector databases include Pinecone, Weaviate, Qdrant, and pgvector.
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