What are the great intro texts on database systems?

Maybe these are good, but I don't know nothin':

"Database System Concepts", Silberschatz et al.
http://db-book.com/

"Database Management Systems", Ramakrishnan and Gehrke
http://pages.cs.wisc.edu/~dbbook/

I like the slides from the first web page (db-book.com).

Mike