Following my last posting I have rebuilt the database using 36 rather than 12 collections and it seems to perform better. I hope you now have a better chance of accessing the datasets. Peter Hello List http://www.semantechs.co.uk/ has so much data in a BaseX database (of course). How best to visualise? Any ideas of which libraries would be the best fit to develop a restxq front end to this dataset? [the server isn't very performant, so apologies if its slow/stopped. I'd appreciate your suggestions nonetheless] Cheers Peter