Is it possible to export the information shown in the database screen of Spotlight to something like MS Excel?
This is possible.
While the database screen is open, right click your mouse on the area where the databases are listed (within the table style display).
You can either select the option 'Copy to Clipboard' and paste into an Excel spreadsheet, or select the option 'Save as...' where you can create a CSV format file and load it into Excel.