Database2026-05-17
MongoDB
Also known as: MongoDB / モンゴDB
A document-oriented NoSQL database that stores data in BSON (JSON-like) format. Schema flexibility and easy horizontal scaling are its hallmarks, complemented by MongoDB Atlas as a fully managed cloud service.
Overview
MongoDB excels at storing frequently changing or semi-structured data. MongoDB Atlas Vector Search also supports RAG system construction alongside relational use cases.
When to Choose MongoDB vs RDBMS
Join-heavy business systems favor PostgreSQL, while IoT sensor data, logs, and CMS content with fluid schemas suit MongoDB better.
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