---
title: "“Hello, World” pgvector and LangChain! Learn how to build LLM applications using PostgreSQL and pgvector as a vector database for embeddings data.\\n"
description: "How to Build LLM Applications With Pgvector Vector Store in LangChain"
section: "Postgres and vector data"
published: 2025-01-10T12:21:03.187Z
---

*Published at Jan 10, 2025*

> **TimescaleDB is now Tiger Data.**

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