Prisma ORM - Modern Database Access for Node.js

npm install prisma @prisma/client
npx prisma init

// prisma/schema.prisma
generator client {
  provider = "prisma-client-js"
}

datasource db {
  provider = "postgresql"
  url      = env("DATABASE_URL")
}

model User {
  id        Int      @id @default(autoincrement())
  email     String   @unique
  name      String?
  posts     Post[]
  createdAt DateTime @default(now())
}

model Post {
  id        Int      @id @default(autoincrement())
  title     String
  content   String?
  published Boolean  @default(false)
  author    User     @relation(fields: [authorId], references: [id])
  authorId  Int
}

import { PrismaClient } from '@prisma/client';

const prisma = new PrismaClient();

// Create
const user = await prisma.user.create({
  data: {
    email: 'alice@example.com',
    name: 'Alice',
  },
});

// Read
const users = await prisma.user.findMany();
const user = await prisma.user.findUnique({
  where: { email: 'alice@example.com' },
});

// Update
const updated = await prisma.user.update({
  where: { id: 1 },
  data: { name: 'Alice Updated' },
});

// Delete
await prisma.user.delete({ where: { id: 1 } });

// Create with relation
const userWithPosts = await prisma.user.create({
  data: {
    email: 'bob@example.com',
    posts: {
      create: [{ title: 'First Post' }, { title: 'Second Post' }],
    },
  },
  include: { posts: true },
});

// Query with relations
const usersWithPosts = await prisma.user.findMany({
  include: { posts: true },
});

# Create migration
npx prisma migrate dev --name init

# Apply migrations in production
npx prisma migrate deploy