Avi Silberschatz's "Database System Concepts: Database System Architectures"
Read this lecture, which covers server-system architectures and client-server architectures. While you read, compare and contrast the differences between the centralized and client-server systems.
Click http://web.archive.org/web/20120710202110/http://www.cse.iitb.ac.in/~sudarsha/db-book/slide-dir/ch20.pdf link to open resource.