# Using Custom Schemas

You need additional steps to use custom database schemas with data APIs.

By default, your database has a `public` schema which is automatically exposed on data APIs.

## Creating custom schemas

You can create your own custom schema/s by running the following SQL, substituting `myschema` with the name you want to use for your schema:

```sql
CREATE SCHEMA myschema;
```

## Exposing custom schemas

You can expose custom database schemas - to do so you need to follow these steps:

1. Go to [API settings](/dashboard/project/_/settings/api) and add your custom schema to "Exposed schemas".
2. Run the following SQL, substituting `myschema` with your schema name:

```sql
GRANT USAGE ON SCHEMA myschema TO anon, authenticated, service_role;
GRANT ALL ON ALL TABLES IN SCHEMA myschema TO anon, authenticated, service_role;
GRANT ALL ON ALL ROUTINES IN SCHEMA myschema TO anon, authenticated, service_role;
GRANT ALL ON ALL SEQUENCES IN SCHEMA myschema TO anon, authenticated, service_role;
ALTER DEFAULT PRIVILEGES FOR ROLE postgres IN SCHEMA myschema GRANT ALL ON TABLES TO anon, authenticated, service_role;
ALTER DEFAULT PRIVILEGES FOR ROLE postgres IN SCHEMA myschema GRANT ALL ON ROUTINES TO anon, authenticated, service_role;
ALTER DEFAULT PRIVILEGES FOR ROLE postgres IN SCHEMA myschema GRANT ALL ON SEQUENCES TO anon, authenticated, service_role;
```

Now you can access these schemas from data APIs:

```js
// Initialize the JS client
import { createClient } from '@supabase/supabase-js'
const supabase = createClient(SUPABASE_URL, SUPABASE_PUBLISHABLE_KEY, {
  db: { schema: 'myschema' },
})

// Make a request
const { data: todos, error } = await supabase.from('todos').select('*')

// You can also change the target schema on a per-query basis
const { data: todos, error } = await supabase.schema('myschema').from('todos').select('*')
```

```dart
// Initialize the Flutter client
await Supabase.initialize(
  url: supabaseUrl,
  publishableKey: publishableKey,
  postgrestOptions: const PostgrestClientOptions(schema: 'myschema'),
);
final supabase = Supabase.instance.client;

// Make a request
final data = await supabase.from('todos').select();

// You can also change the target schema on a per-query basis
final data = await supabase.schema('myschema').from('todos').select();

````

```bash
# Append /rest/v1/ to your URL, and then use the table name as the route.

# for GET or HEAD request use Accept-Profile
curl '/rest/v1/todos' \
  -H "apikey: " \
  -H "Authorization: Bearer " \
  -H "Accept-Profile: myschema"

# for POST, PATCH, PUT and DELETE Request use Content-Profile
curl -X POST '/rest/v1/todos' \
  -H "apikey: " \
  -H "Authorization: Bearer " \
  -H "Content-Type: application/json" \
  -H "Content-Profile: myschema" \
  -d '{"column_name": "value"}'
````