Have you worked with MongoDB or similar document-oriented databases?

Yes, I have experience working with MongoDB and other document-oriented databases. MongoDB stores data in BSON format (an extension of JSON), which allows flexible modeling of complex structures without a rigid schema, as in relational databases.

For example, in a project analyzing user data, I used MongoDB to store user profiles with nested objects and arrays, which facilitated quick access and scalability. Working with MongoDB involved creating indexes to speed up queries, aggregating data for processing, and using drivers to interact with the database from code.

Document databases are convenient when the data structure can change frequently or when you need to store nested and unstructured data, which is common in projects involving machine learning and AI.