Schema Definition & Models in Prisma
From the Prisma ORM cheat sheet · Prisma Schema & Models · verified Jul 2026
Schema Definition & Models
Define your database schema using Prisma Schema Language with models, fields, and attributes
typescript
// 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())
updatedAt DateTime @updatedAt
@@map("users")
}
model Post {
id Int @id @default(autoincrement())
title String
content String?
authorId Int
author User @relation(fields: [authorId], references: [id])
@@map("posts")
}
// BASH_BLOCK:
# Generate Prisma Client after schema changes
npx prisma generate
# Format schema file
npx prisma format
# Validate schema
npx prisma validate
# Open Prisma Studio to view data
npx prisma studio💡 Prisma schema is the single source of truth for your database
⚡ Run npx prisma generate after schema changes
📌 Use npx prisma format to auto-format schema
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