Which is Better Node.js ORM Libraries?
sequelize vs mongoose

Node.js ORM, or Object-Relational Mapping, is a programming technique that simplifies database interaction in Node.js applications. It enables developers to work with databases using JavaScript or TypeScript objects instead of raw SQL queries. This approach abstracts the complexities of database operations, allowing for a more object-oriented coding style. With features like cross-database compatibility, schema management, query building, and middleware support, Node.js ORM libraries, such as Mongoose, Prisma, Knex, Sequelize, TypeORM, Objection, Bookshelf, and Waterline, provide a convenient and consistent way to model, query, and manage data in various database systems, catering to different project needs and preferences in the Node.js ecosystem.

Package	Weekly Downloads	Github Stars	Open Issues	Last Commit	License

mongoose	2,297,448	26,581	257	a day ago	MIT License
sequelize	1,990,418	29,014	861	a day ago	MIT License

Featuressequelizemongoose
 
 
 
SizeSequelize has a moderate footprint, providing a comprehensive ORM for relational databases.
Mongoose is lightweight, designed for MongoDB, and provides a compact set of features.
ConsistencySequelize offers consistent and structured data modeling for relational databases.
Mongoose enforces a consistent schema for MongoDB, ensuring data integrity.
MutabilitySequelize supports dynamic migrations, facilitating schema changes in relational databases.
Mongoose allows for easy schema mutations, accommodating evolving data models.
LocalizationSequelize lacks built-in support for localization but can be extended using custom code.
Mongoose does not directly handle localization, but developers can implement custom solutions.
ExtensibilitySequelize is extensible, supporting custom hooks, plugins, and query customization.
Mongoose is highly extensible, allowing developers to create custom plugins and middleware.
MaintenanceSequelize is well-maintained, with frequent updates and a strong community.
Mongoose has active maintenance and a large community, ensuring ongoing support.
PopularSequelize is a popular choice for developers working with relational databases in Node.js.
Mongoose is highly popular and widely used in the Node.js and MongoDB community.
Learning CurveSequelize has a moderate learning curve, particularly for those new to relational databases.
Mongoose has a moderate learning curve, especially for those new to MongoDB.
EcosystemSequelize benefits from a strong ecosystem with numerous plugins and community contributions.
Mongoose has a robust ecosystem with a variety of plugins and community support.

Features	sequelize	mongoose

Size	Sequelize has a moderate footprint, providing a comprehensive ORM for relational databases.	Mongoose is lightweight, designed for MongoDB, and provides a compact set of features.
Consistency	Sequelize offers consistent and structured data modeling for relational databases.	Mongoose enforces a consistent schema for MongoDB, ensuring data integrity.
Mutability	Sequelize supports dynamic migrations, facilitating schema changes in relational databases.	Mongoose allows for easy schema mutations, accommodating evolving data models.
Localization	Sequelize lacks built-in support for localization but can be extended using custom code.	Mongoose does not directly handle localization, but developers can implement custom solutions.
Extensibility	Sequelize is extensible, supporting custom hooks, plugins, and query customization.	Mongoose is highly extensible, allowing developers to create custom plugins and middleware.
Maintenance	Sequelize is well-maintained, with frequent updates and a strong community.	Mongoose has active maintenance and a large community, ensuring ongoing support.
Popular	Sequelize is a popular choice for developers working with relational databases in Node.js.	Mongoose is highly popular and widely used in the Node.js and MongoDB community.
Learning Curve	Sequelize has a moderate learning curve, particularly for those new to relational databases.	Mongoose has a moderate learning curve, especially for those new to MongoDB.
Ecosystem	Sequelize benefits from a strong ecosystem with numerous plugins and community contributions.	Mongoose has a robust ecosystem with a variety of plugins and community support.

sequelize

mongoose

Sequelize

Sequelize is an easy-to-use and promise-based Node.js ORM tool for Postgres, MySQL, MariaDB, SQLite, DB2, Microsoft SQL Server, and Snowflake. It features solid transaction support, relations, eager and lazy loading, read replication and more.

Would you like to contribute? Read our contribution guidelines to know more. There are many ways to help! 😃

:computer: Getting Started

Ready to start using Sequelize? Head to sequelize.org to begin!

Our Getting Started guide for Sequelize 6 (stable)

:money_with_wings: Supporting the project

Do you like Sequelize and would like to give back to the engineering team behind it?

We have recently created an OpenCollective based money pool which is shared amongst all core maintainers based on their contributions. Every support is wholeheartedly welcome. ❤️

:pencil: Major version changelog

Please find upgrade information to major versions here:

Upgrade from v5 to v6

:book: Resources

:wrench: Tools

:speech_balloon: Translations

English (Official)
中文文档 (Unofficial)

:warning: Responsible disclosure

If you have security issues to report, please refer to our Responsible Disclosure Policy for more details.

Which is Better Node.js ORM Libraries?sequelize vs mongoose