CosmosDB

Lesson in the Data Engineer Roadmap · Stage 18: What is Data Warehouse?

Last updated 14 September 2026

What is CosmosDB?

Azure Cosmos DB is a native No-SQL database service and vector database for working with the document data model. It can arbitrarily store native JSON documents with flexible schema. Data is indexed automatically and is available for query using a flavor of the SQL query language designed for JSON data. It also supports vector search. You can access the API using SDKs for popular frameworks such as.NET, Python, Java, and Node.js.

Study this in the interactive course See the whole Data Engineer roadmap

Free resources to learn CosmosDB

Official docsWhat are Containers?
Official docsCAzure Cosmos DB - Database for the AI Era
VideoWhat is Azure Cosmos DB?

CosmosDB: common questions

Can I learn CosmosDB in Hindi?

This lesson is written in English. Once you sign in, open it in the interactive course and ask the AI tutor to explain CosmosDB in Hindi or Hinglish. The tutor answers from this lesson’s own text, so it stays on the syllabus, and it runs on your own Google, OpenAI or Anthropic key.

Is this CosmosDB tutorial for beginners?

It is lesson 62 of 186 in the free Data Engineer roadmap, in stage 18, What is Data Warehouse?. If you are new to Data Engineer, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.