# Supabase: Data Writing in Remix Supabase

> Learn how to write data to the Supabase Database in your Remix Supabase React applications.

*Canonical: https://makerkit.dev/docs/remix-supabase/tutorials/supabase-data-writing*

---

In the section above, we saw how to fetch data from the Supabase Postgres.
Now, let's see how to write data to the Supabase database.

#### Creating a Task

First, we want to add a file named `mutations.ts` at `lib/tasks/`. Here, we
will add all the mutations that we will need to create, update, and delete
tasks.

```ts
export function createTask(
  client: Client,
  task: Omit<Task, 'id'>
) {
  return client.from(TASKS_TABLE).insert({
    name: task.name,
    organization_id: task.organizationId,
    due_date: task.dueDate,
    description: task.description,
    done: task.done,
  });
}
```

#### Updating a Task

Now, let's write a hook to update an existing task.

We will write another mutation function to update a task:

 ```ts {% title="lib/tasks/mutations.ts" %}
export function updateTask(
  client: Client,
  task: Partial<Task> & { id: number }
) {
  return client
    .from(TASKS_TABLE)
    .update({
      name: task.name,
      done: task.done,
    })
    .match({
      id: task.id,
    })
    .throwOnError();
}
```

#### Deleting a Task

We will write another mutation function to delete a task:

 ```ts {% title="lib/tasks/mutations.ts" %}
export function deleteTask(
  client: Client,
  taskId: number
) {
  return client.from(TASKS_TABLE).delete().match({
    id: taskId
  }).throwOnError();
}
```