# What is a vector database?

Source: https://cloudbrain.in/glossary/vector-database
Last updated: 2026-11-10

A vector database stores pieces of text, images or other data as numerical vectors so that software can find items with similar meaning, not just matching words. It is the search layer behind many retrieval-augmented AI assistants built on company documents.

## Why does a vector database matter for architects, engineers and contractors in India?

It is the search layer behind many retrieval-augmented AI assistants built on company documents. It lets staff find relevant past project information even when they use different wording.

## What is an example of a vector database?

Searching 'waterproofing for terrace gardens' finds past specifications that mention 'roof garden membranes', because their meanings are similar.

## Where does CloudBrain come in?

Our [custom AI tools and agents](/services/custom-ai) service helps architecture, engineering and construction firms put this into practice. See the related terms below, or browse the full [AEC × AI glossary](/glossary).