Azure Cosmos DB documentation

Fully managed, distributed NoSQL, relational, and vector database for modern app development. High performance, high availability, and support for open-source PostgreSQL, MongoDB, and Apache Cassandra. Build cloud-native apps effortlessly.

Concept

Introduction to Azure Cosmos DB

Get started

Try Azure Cosmos DB free

Concept

Distributed NoSQL databases

Reference

Microsoft Questions and Answers

Concept

Vector Database in Azure Cosmos DB

Concept

Choose an API in Azure Cosmos DB

How-To Guide

Create an Azure Cosmos DB for NoSQL account

How-To Guide

Create an Azure Cosmos DB for PostgreSQL account

APIs

NoSQL

• SQL queries
• Model document data
• See more >

MongoDB

• Supported features and syntax
• Mapping consistency levels
• Extension commands
• See more >

Apache Cassandra

• Wire protocol support
• Partitioning
• Secondary indexing
• See more >

Apache Gremlin

• Wire protocol support
• Graph data modeling
• Import graph data
• See more >

Table

• Build apps with API for Table
• Find request unit charge
• FAQ
• See more >

PostgreSQL

• Distributed relational databases
• Connect and run SQL commands using Python
• Distribute and modify tables
• See more >

Concepts

Explore core concepts

• Resource model
• Distribute data globally
• Partitioning
• Throughput & request units

Model your data

• Data modeling and partitioning
• Azure Cosmos DB service quotas

Analytics and BI

• Analytics and BI overview
• Analytics and BI use cases
• Mirroring in Microsoft Fabric
• API for NoSQL mirroring tutorial in Microsoft Fabric
• Azure Synapse Link for Azure Cosmos DB

Training & certification

Create an API for NoSQL application

• Build a .NET app
• Build a Node.js app
• Build a Java app
• See more >

Work with API for PostgreSQL

• Model data
• Ingest and query data
• Extend PostgreSQL functionality using extensions
• See more >

Certifications

• Microsoft Certified - Azure Cosmos DB Developer Specialty
• Microsoft Certified - Azure Developer Associate

Data Migration

Migration options

• Cassandra Query Language (CQL) shell, Spark – API for Cassandra
• Azure Database Migration Service – API for MongoDB

Migration guides

• Oracle Database to Azure Cosmos DB API for NoSQL using Striim
• Oracle Database to Azure Cosmos DB API for Cassandra using Striim
• Oracle Database to Azure Cosmos DB API for Cassandra using Arcion
• Apache Cassandra to Azure Cosmos DB using Arcion
• Migrate hundreds of terabytes of data