I should make it clear that I do not rate NX for data-base/cataloguing. Being a mac user, I use GraphicConverter for that, about £50 I think. It slip-streams the mac finder database and has one or two other gems like its 'unskew' & 'local contrast enhancement' (can be done in CS, see cambridgeincolour tutorials) to restore clarity of complex reduced images and no-fuss slideshow for all or part of a folder.

For PCs you need one of the many other progs recommended in the forum & no idea how Lightroom compares.