Advantages of Mongoose

Easy translation between documents and JavaScript objects with its schema-based modeling
Built-in type casting and validation to reduce errors
Helper methods for common tasks like querying, updating records, etc.
Easy connection handling for setting up MongoDB communication
Additional features like middleware for interacting with data pre-save/post-save

What is the use of ORM/ODM libraries like Mongoose in Express applications ?

If you build web applications with Node and Express, you know how quick and easy it is to get a server up and running. Routing, middlewares, template rendering – Express has you covered on the core web dev stuff. But every application needs to work with data at some point. Saving user records, storing file uploads, retrieving info for display that’s when developing the application becomes harder..

Interacting with MongoDB directly means wrangling connections, writing tedious CRUD operations, and translating results. That’s why smart Express developers reach for Mongoose – the leading Object Document Mapper (ODM) for MongoDB in Node. Mongoose makes modeling and working with data worlds simpler, so you spend less time-fighting databases and more time building great apps.

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