Mobile developers using Javascript-based mobile application development platforms such as Cordova, Ionic and React Native have enjoyed the benefit of being able to push app updates over-the-air without resubmitting their apps to the App Store or Google Play for quite some time. As long as the updates are not compiled code, and don’t change the primary purpose of the application then both Apple and Google allow this.

In this series, we've seen how to create GraphQL APIs in Elixir using Absinthe. So far, we have only discussed a one-way communication channel where the client makes the queries or mutations, and the server responds. GraphQL also supports a long-running subscription between the client and the server where the server can notify the client of events. This can be very useful in multi-user scenarios where many users might interact with the same resource at the same time.

The value of data is no longer debatable. But the secret to unlocking that value still evades many organizations. Only 44% of data and analytics leaders think their teams are effective in providing value, according to a new Gartner® survey. And business users are still struggling, too, citing accessibility issues and complexity as barriers to data use. Combine this with low executive confidence in data, and it’s clear that data challenges are ubiquitous.

Despite the growing popularity of NoSQL databases such as MongoDB and Firebase among JavaScript developers, SQL databases remain a reliable and widely used tool for storing data. This tutorial will show you the basics of SQL databases and how to use them with Node.js.