MongoDB
In plain terms
A popular document-oriented NoSQL database.
Going deeper
MongoDB stores flexible JSON-like documents instead of rigid tables, suiting evolving schemas and rapid development. It scales horizontally via sharding.
Under the hood
Schema flexibility speeds iteration; you model around query patterns and accept eventual consistency by default.
Examples
Content management, catalogs, real-time apps, flexible-schema data, Atlas.
Think of it like...
Like flexible folders holding whole documents rather than fixed-column spreadsheets.