As I prepared for the CompTIA DataSys+ exam, I gathered a series of notes and observations that helped me deepen my understanding of the database concepts which are covered in the exam's syllabus. In this post, I’m sharing some of those details. Some of the topics discussed extend beyond the scope of the exam, and not everything included in the exam's syllabus is documented. This post also contains details of the test database I designed for hands-on practice....
What is SaaS? Software as a Service (SaaS) is everywhere. Put simply, SaaS is way of providing an application that can be used directly over the internet. Typically, there’s no need to install anything on a computer, and all that’s usually required to get started (as a user) is a web browser. A huge number of people rely on SaaS applications everyday without giving it too much thought. Below are some examples of “everyday” SaaS products which are widely used:...
In this post, I outline the steps needed to take an input from a terraform parent (or calling) module and pass it to a config file on a target EC2 instance. What are Terraform Modules? Using modules in terraform helps to organise and reuse code, allowing a module to be defined once and used many times. For example, a development team may want to quickly create and destroy a number of EC2 instances....
Like most people, my domestic ISP goes down sometimes. I work from home most of the time and the most common solution when this problem occurs is to ’tether’ a phone to use it’s 4G connection. This is OK, but a solution which allowed my entire home network to switch over to a backup internet connection would be much better… As well as my laptop maintaining a connection, movies could still be streamed (backup connection bandwith permitting) and IoT devices would keep working - you get the general idea....