In this lesson, you learned how to use Mongoose to interact with a MongoDB database. Let’s review some of the topics that we covered:

• Mongoose is a Node package that interacts with a running MongoDB database.
• MongoDB stores documents in collections and collections of documents in databases. Each document has key-value pairs as entries.
• Using a Schema, we can set the structure of documents dynamically, using paths with schema types and validators.
• Models are JavaScript classes that we compile from our Schema definitions.
• You can use models to create, read, update, and delete documents from a database.
• You can query a database using .find() and .findOne(). Mongo also provides query operators to allow for more complex queries.

Mongoose also allows for the creation of methods associated with a database:

• .statics() adds static “class” methods to the Models itself.
• .methods() adds an instance method to documents.