Databases Intermediate

What is Database Index Types?

Different index structures (B-tree, Hash, GIN, GiST, BRIN) optimized for various query patterns and data types.

Database index types serve different purposes: B-tree indexes handle equality and range queries efficiently and are the default in most databases. Hash indexes are optimized for equality comparisons only. GIN (Generalized Inverted Index) indexes excel at full-text search and JSONB queries in PostgreSQL. GiST (Generalized Search Tree) indexes support geometric data and range types. BRIN (Block Range Index) indexes are compact indexes ideal for naturally ordered data like timestamps. Choosing the right index type can improve query performance by orders of magnitude.

Learn More About This Topic

Database Design & Modeling Fundamentals

Closely related

MongoDB Fundamentals: Building Scalable NoSQL Applications with Document Databases

Related reading

PostgreSQL Database Setup: The Complete Guide

Related reading

Related Terms

A database operation that inserts a new row if it does not exist, or updates the existing row if it does.

Connection Pool

A cache of database connections that can be reused, avoiding the overhead of creating new connections for each request.

A database object that automatically executes a specified function when certain events (INSERT, UPDATE, DELETE) occur on a table.

Prepared Statement

A pre-compiled SQL template that uses parameters instead of literal values, preventing SQL injection and improving performance.

Write-Ahead Log (WAL)

A technique where changes are first written to a log before being applied to the database, ensuring crash recovery and data integrity.

The process of copying and maintaining database data across multiple servers for redundancy, failover, and read scaling.

View All Databases Terms →