Recommended papers.
Consistency Tradeoffs in Modern Distributed Database System
Design
Daniel J. Abadi
The Graph Traversal Pattern from Marko A. Rodriguez and Peter Neubauer
Foundations of Modern Query Languages for Graph Databases from Renzo Angles, Marcelo Arenas, Aidan Hogan, Dcc, Juan Reutter
The Semantic Web: A New Form of Web Content That is Meaningful to Computers Will Unleash a Revolution of New Possibilities, by Tim Berners-Lee, James Hendler and Ora Lassila. in Scientific American, April 2002.
From Enterprise Models to Dimensional Models:
A Methodology for Data Warehouse and Data Mart Design, Daniel L. Moody.