Any idea how to export the data?
It looks to me like you've already figured that out. Otherwise, you would not have been able to post that picture.
You could use T and H, instead of spelling out the names, to minimize the amount of data being sent.
Any number of scripting languages or programming languages can be used to read the serial data, and to interface with the relational database. Which one would be best would depend on which relational database you are using, and what languages you are familiar with.