DDL is the first steps in every database creation as they define the objects that will contain and manage the data and server-side code.
Below are notes taken for the "Scala Essential Training for Data Science": https://www.lynda.com/Scala-tutorials/Scala-Essential-Training-Data-Science/559182-2.html
In this course we will need to install Scala, Postgres, and Spark. The Lynda course we will be following along with provides manual installation instructions that do not use tools package management tools. To simplify installations directions, I encourage using a command line based package management tool. On MacOS there is Homebrew (https://brew.sh/), in Windows there is Chocolatey (https://chocolatey.org/), and on Linux distributions there is SDKMAN! (https://sdkman.io/) and on Debian based systems APT (https://wiki.debian.org/AptCLI).
In the case of Linux users, I will provide SDKMAN! installation instructions in some cases, and APT instructions in others, depending on which is more straightforwar