What are Schemas and Models?
Before diving into the reasons behind having both schemas and models in Mongoose, let’s understand what they are:
- Schema: A schema in Mongoose defines the structure of documents within a MongoDB collection. It specifies the fields, their types, validation rules, and default values. Essentially, a schema acts as a blueprint for documents.
- Model: A model, on the other hand, is a compiled version of a schema. It represents a collection in the MongoDB database and provides an interface for interacting with the documents in that collection. Models are responsible for querying, saving, updating, and deleting documents.
Why does Mongose have Both Schemas and Models
In the world of MongoDB and Node.js, Mongoose is a popular object modeling tool that provides a straightforward way to interact with MongoDB databases. One of the key features of Mongoose is its use of schemas and models, which help define the structure of documents and provide an abstraction layer for performing database operations.
In this article, we’ll delve into why Mongoose has both schemas and models, exploring their roles, differences, and how they work together, with examples and outputs to illustrate each concept clearly.