The data store variety and landscape today is huge and can be confusing. To get a grip on all the various solutions out there, I find the map below (courtesy of 451research.com) very helpful when making the long list of potential candidates for a project. It lets you make sure you that don’t leave out anything relevant from your selection process and that you are, quite literally, on the right track.
For the very high level purpose of your project, look up the line and list all the data stores on that line. Research each one against your project-specific requirements. Finally, make a short list with the ones which seem to be fit for purpose.