Theory of Relational Databases (Hardcover) by David Maier (Author) http://g-ecx.images-amazon.com/images/G/01/ciu/c7/73/477a810ae7a033522edf8110.L.jpg Hardcover: 640 pages Publisher: Computer Science Pr (March 1983) Language: English [ISBN 0914894420] You can read this book online for free here (apparently the copyright reverted to the author and he is offering it for free): http://web.cecs.pdx.edu/~maier/TheoryBook/TRD.html