In an attempt to summarize the relationship among various metadata formats and how they relate to building Internet systems I wrote a glossary. I then ordered and tied the terms together with a bit of narrative to explain the relationships among the terms
L. Marinho, K. Buza, and L. Schmidt-Thieme. Proceedings of the International Semantic Web Conference, volume 5318 of Lecture Notes in Computer Science, page 261-276. Springer, (2008)