---
title: "B-tree indexes"
description: "How can you explain range lookup using a B-tree index?"
status: "coming-soon"
language: "en"
canonical: "https://bulnik.dev/en/articles/topics/T40.02/"
topicId: "T40.02"
---

> Coming soon — this article is being prepared. Below are its question, intended outcome, and place in the story.

## The question

How can you explain range lookup using a B-tree index?

## What we will work through

Explain range lookup using a B-tree index.

## Before you begin

Previously covered: Primary keys and record identity.

- [Primary keys and record identity](/en/articles/topics/T39.02/)