MongoDB vs Convex

import { MongoClient } from 'mongodb';

const client = new MongoClient(process.env.MONGODB_URI);
await client.connect();

const db = client.db('myapp');
const users = db.collection('users');

await users.insertOne({ name: 'Alice', email: 'alice@example.com' });
const user = await users.findOne({ name: 'Alice' });

// convex/tasks.ts (server function)
import { query, mutation } from './_generated/server';

export const list = query(async (ctx) => ctx.db.query('tasks').collect());
export const create = mutation(async (ctx, { text }) => {
  await ctx.db.insert('tasks', { text, isCompleted: false });
});

// React component
import { useQuery, useMutation } from 'convex/react';
const tasks = useQuery(api.tasks.list);