generator client { provider = "prisma-client" output = "../generated" }


## 2. Config Configuration (v7)

In `prisma.config.ts`:

```typescript
import { defineConfig, env } from 'prisma/config'

export default defineConfig({
  schema: 'prisma/schema.prisma',
  datasource: {
    url: env('DATABASE_URL'),
  },
})

3. Environment Variable

In .env:

DATABASE_URL="file:./dev.db"

Connection String Format

file:PATH

PATH: Relative path to the database file (from prisma/schema.prisma location usually, but in v7 check prisma.config.ts context). Usually relative to the schema file.

Driver Adapter (Prisma ORM 7 required)

Prisma ORM 7 uses the query compiler by default, so you must use a driver adapter.

Install adapter and driver:

npm install @prisma/adapter-better-sqlite3 better-sqlite3

Instantiate Prisma Client with the adapter:

import { PrismaClient } from '../generated/client'
import { PrismaBetterSqlite3 } from '@prisma/adapter-better-sqlite3'

const adapter = new PrismaBetterSqlite3({
  url: process.env.DATABASE_URL ?? 'file:./dev.db',
})

const prisma = new PrismaClient({ adapter })

Using Driver Adapter (LibSQL / Turso)

For edge compatibility or Turso:

Install:

npm install @prisma/adapter-libsql @libsql/client

Instantiate:

import { PrismaClient } from '../generated/client'
import { PrismaLibSql } from '@prisma/adapter-libsql'

const adapter = new PrismaLibSql({
  url: process.env.TURSO_DATABASE_URL,
  authToken: process.env.TURSO_AUTH_TOKEN,
})
const prisma = new PrismaClient({ adapter })

Limitations

No Enums: SQLite doesn't support enums (Prisma polyfills them or treats as String).
No Scalar Lists: String[] is not supported directly.
Concurrency: Write operations lock the file.

Common Issues

"Database file not found"

Ensure the path in DATABASE_URL is correct relative to where Prisma is running or the schema file. file:./dev.db creates it next to schema.

prisma-database-setup-sqlite

SQLite Setup

Prerequisites

1. Schema Configuration