ocr: Desktop Workgroup Department Enterprise Database Database Database Database Singleuser Iwo to. 20 users 20to100 users More than 100 users Less than Less than Less than More than 500 Megabyte L database 1Gigabyte database 20Gigabyte database 200 Gigabyte database POMobile LAN ServerUP) LANServer. ParallelServer Uniprocessor (UP) UP/Symmetric SMP/Massively Parallel DOS OS/2 Multiprocessing SMPI) Processing (MPPI) Macintosh OS NetWare Windows Unix OS/2 MVS Windows NT Unix Guardian Windows NT Unix other FIGURE 2. Types of database servers and their performance requirements.