[xsl] XML database ideas?

[Mark Giffin <m1879@xxxxxxxxxxxxx>]

I have XSLT that uses MS Excel XML files stored on the filesystem as 
lookup tables. The XSLT produces config files and reports. The data in 
the Excel files is entered manually. The Excel files are getting large 
and unwieldy. I'm thinking that a database of some kind would be a good 
replacement for them, but I have no idea what to use. I'd prefer 
something open source but it's not a hard requirement. I'd like to keep 
my current XSLT as much as possible and use it to access the database. 
The database needs a user-friendly user interface of some kind (maybe 
web based?) to manually enter the data.

I've thought of using exist, mysql, maybe redis, but I need more data. 
Any suggestions?

Thanks,
Mark