Hey, just wanted to say that this looks like a really cool and useful project. I work with a few medical databases and sometimes I just need a very quick breakdown of specific data and while I usually just write a short script, the utility and portability of this code looks fantastic to me. Which brings me to a question, how well does this program handle moderately large databases (~100GB-1TB) in your (or anyone else's) experience? In other words does it try to load everything into memory, or does it query as needed when given a database?