ocr: Server CPU 0/S Master Database User 1 data server process Primary Copy PID-765 Disk 0 User 2 SQL Serverscheduler: User 3 runnable tasks are Disk 1 scheduled by the data server Master Database Secondary Copy One thread for each user connectioa One thread for each! ogical database device (enable: asynchronous disk V0 within one physical device) FIGURE 1, Multithreaded architecture on a uniprocessor machine.
