Synopsis
As a complete database system which combines a data engine with a graphical user interface and software-development tools that software developers and data architects can use to develop application software, MS Access is the world’s most popular database by market share.
But it would be Oracle in the purest database terms and for heavy duty data storage, terabytes of data, and supporting millions of users simultaneously worldwide which is awesome. My experience with it includes having it as a back end for building software. As such I thought I would get more familiarized with it's SQL aspects so took certification exams at a testing center.
Note: Certification transcripts can be emailed as well to prospective employers should there be site permission issues. Works best in Chrome.