docs: update shadow database instructions for Prisma 6 and 7 configurations (#7346)

Author: nurul3101

content/200-orm/300-prisma-migrate/200-understanding-prisma-migrate/200-shadow-database.mdx

@@ -81,16 +81,42 @@ In some cases it might make sense (e.g. when [creating and dropping databases is
 
 1. Create a dedicated database that should be used as the shadow database
 2. Add the connection string of that database your environment variable `SHADOW_DATABASE_URL` (or `.env` file)
-3. Add the [`shadowDatabaseUrl`](/orm/reference/prisma-schema-reference#datasource) field reading this environment variable:
+3. In Prisma 7, configure the `shadowDatabaseUrl` field in `prisma.config.ts` under the `datasource` object. In Prisma 6 and below, add the `shadowDatabaseUrl` field to the `datasource` block in your `schema.prisma` file.
+
+<TabbedContent code>
+<TabItem value="Prisma 7 (prisma.config.ts)">
+
+```ts
+import "dotenv/config";
+import { defineConfig, env } from "prisma/config";
+
+export default defineConfig({
+  schema: "prisma/schema.prisma",
+  migrations: {
+    path: "prisma/migrations",
+  },
+  datasource: {
+    url: env("DATABASE_URL"),
+    //highlight-next-line
+    shadowDatabaseUrl: env("SHADOW_DATABASE_URL"),
+  },
+});
+```
+
+</TabItem>
+<TabItem value="Prisma 6 and below (schema.prisma)">
 
-```prisma highlight=4;normal
+```prisma
 datasource db {
   provider          = "postgresql"
   //highlight-next-line
   shadowDatabaseUrl = env("SHADOW_DATABASE_URL")
 }
 ```
 
+</TabItem>
+</TabbedContent>
+
 > **Important**: Do not use the exact same values for `url` and `shadowDatabaseUrl` as that might delete all the data in your database.
 
 ## Cloud-hosted shadow databases must be created manually
@@ -99,16 +125,42 @@ Some cloud providers do not allow you to drop and create databases with SQL. Som
 
 1. Create a dedicated cloud-hosted shadow database
 2. Add the URL to your environment variable `SHADOW_DATABASE_URL`
-3. Add the [`shadowDatabaseUrl`](/orm/reference/prisma-schema-reference#datasource) field reading this environment variable:
+3. In Prisma 7, configure the `shadowDatabaseUrl` field in `prisma.config.ts` under the `datasource` object. In Prisma 6 and below, add the `shadowDatabaseUrl` field to the `datasource` block in your `schema.prisma` file.
+
+<TabbedContent code>
+<TabItem value="Prisma 7 (prisma.config.ts)">
+
+```ts
+import "dotenv/config";
+import { defineConfig, env } from "prisma/config";
+
+export default defineConfig({
+  schema: "prisma/schema.prisma",
+  migrations: {
+    path: "prisma/migrations",
+  },
+  datasource: {
+    url: env("DATABASE_URL"),
+    //highlight-next-line
+    shadowDatabaseUrl: env("SHADOW_DATABASE_URL"),
+  },
+});
+```
+
+</TabItem>
+<TabItem value="Prisma 6 and below (schema.prisma)">
 
-```prisma highlight=4;normal
+```prisma
 datasource db {
   provider          = "postgresql"
   //highlight-next-line
   shadowDatabaseUrl = env("SHADOW_DATABASE_URL")
 }
 ```
 
+</TabItem>
+</TabbedContent>
+
 > **Important**: Do not use the same values for `url` and `shadowDatabaseUrl`.
 
 ## Shadow database user permissions