Mongoose

Summary

The dominant ODM (Object-Document Mapper) for MongoDB in Node.js — adds schemas, validation and a familiar model-based API on top of MongoDB's flexible documents.

• 1Define a Mongoose schema with validation rules for a collection.
• 2Practice Mongoose's query methods and compare them to raw MongoDB driver calls.
• 3Learn Mongoose middleware (`pre`/`post` hooks) for logic that runs around saves/queries.