If I want to learn how to build a search engine I can read Tim Bray's excellent series "On Search". Not only is it good, but is also contains pointers into the literature.
I'm looking for recommendations for similar resources on building a database. Not using a database, but building one, as if I was going to go out tomorrow and rewrite mySQL or Berkeley DB from scratch. They can either be on-line resources like Tim's or they can be dead tree recommendations. Thanks.