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 SudarshanDatabase System Concepts - 6 17.3 ©Silberschatz, Korth and Sudarshan th Edition 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