Creating documents in MongoDB
Once the database has been accessed, you can create documents in it.
A document will be inserted into a collection. A collection will therefore group together a set of documents. The database will therefore be a set of collections, each containing documents.
In order to be able to insert documents, mongoose asks us to describe the structure of these documents. For this, we will use schemas and models.
Describing document structure using schemas and models
To access the documents in the database, the documents must be described by means of schemas and models.
Definitions
A schema allows you to define the structure of a document that is stored in a collection. The structure is defined according to MongoDB data types.
A model is the representation of a schema as a JavaScript class. It links a schema to a MongoDB collection.
Let’s look at how to create a schema and then a model.