Databases
Node.js TypeORM
Using TypeORM
Node.js TypeORM supports multiple databases with TypeScript integration.
Introduction to TypeORM
TypeORM is an Object-Relational Mapper (ORM) for Node.js, written in TypeScript. It allows developers to interact with databases using TypeScript or JavaScript, leveraging the full power of TypeScript for database operations. TypeORM supports various databases like MySQL, PostgreSQL, SQLite, and more, making it a versatile choice for application development.
Setting Up TypeORM with Node.js
To begin using TypeORM in your Node.js application, you need to install it along with a compatible database driver. For example, if you're using MySQL, you would need the following:
Next, configure TypeORM by creating an ormconfig.json file in your project root. This file should specify the connection details for your database.
Defining Entities
In TypeORM, entities are the building blocks representing database tables. They are defined using classes and decorators in TypeScript. Here's how you can define a simple User entity:
Creating a Connection
To interact with your database, you need to establish a connection. This is done using TypeORM's createConnection method:
Running Database Operations
Once a connection is established, you can perform various database operations like inserting, updating, or deleting records. Here's an example of inserting a new user:
Conclusion
TypeORM provides a robust framework for managing database operations in Node.js applications with TypeScript. Its support for multiple databases and ease of use makes it a preferred choice for developers looking to implement ORM in their projects.
Databases
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