Express.js itself doesn’t come with an Object-Relational Mapping (ORM) built-in, but there are several ORMs that can be used with Express.js to manage database interactions. Here are some popular ORMs that work well with Express.js:
- Sequelize: A promise-based ORM for Node.js that supports multiple databases like PostgreSQL, MySQL, MariaDB, SQLite, and Microsoft SQL Server. It provides features like transactions, relations, and migrations.
- TypeORM: Known for its TypeScript support, TypeORM can also be used with JavaScript. It supports multiple databases and provides features like migrations and repositories for handling database queries.
- Prisma: A next-generation ORM that offers type-safe database access and an intuitive data model. It’s designed to work with TypeScript and JavaScript, supporting PostgreSQL, MySQL, SQL Server, SQLite, and MongoDB.
- Bookshelf.js: Built on top of Knex, which is a SQL query builder, it provides an ORM layer for managing SQL database operations, compatible with PostgreSQL, MySQL, and SQLite3.
- Objection.js: Another ORM built on Knex, offering a query builder approach with support for complex SQL queries, ideal for SQL databases like PostgreSQL, MySQL, and SQLite.
These ORMs can be integrated into Express.js applications to facilitate easier database management, allowing developers to work with JavaScript objects instead of writing raw SQL queries, thus enhancing productivity and readability of the code. If you’re looking to implement database operations in your Express.js application, you would typically install one of these ORMs via npm or yarn and set it up according to the specific documentation of the chosen ORM.
