Đang chuẩn bị liên kết để tải về tài liệu:
Lecture Database system concepts (6/e): Chapter 17 - Silberschatz, Korth, Sudarshan

Chapter 17 - Database system architectures. Chapter 17 covers computer-system architecture, and describes the influence of the underlying computer system on the database system. We discuss centralized systems, client–server systems, and parallel and distributed architectures in this chapter. | Chapter 17: Database System Architectures Database System Concepts, 6th Ed. ©Silberschatz, Korth and Sudarshan See www.db-book.com for conditions on re-use Chapter 17: Database System Architectures Centralized and Client-Server Systems Server System Architectures Parallel Systems Distributed Systems Network Types Database System Concepts - 6th Edition 17.2 ©Silberschatz, Korth and Sudarshan Centralized Systems Run on a single computer system and do not interact with other computer systems. General-purpose computer system: one to a few CPUs and a number of device controllers that are connected through a common bus that provides access to shared memory. Single-user system (e.g., personal computer or workstation): desk-top unit, single user, usually has only one CPU and one or two hard disks; the OS may support only one user. Multi-user system: more disks, more memory, multiple CPUs, and a multi-user OS. Serve a large number of users who are connected to the system vie terminals. Often called server systems. Database System Concepts - 6th Edition 17.3 ©Silberschatz, Korth and Sudarshan A Centralized Computer System Database System Concepts - 6th Edition 17.4 ©Silberschatz, Korth and Sudarshan Client-Server Systems Server systems satisfy requests generated at m client systems, whose general structure is shown below: Database System Concepts - 6th Edition 17.5 ©Silberschatz, Korth and .