上溶充通大粤 Typical Informal Example of a Connectivity Drawing SHANGHAI JIAO TONG UNIVERSITY Application Application Application Physical Client Client Client Connectivity TCP/IP Ethernet Logical LAN Connectivity Communication 口 Agent for Application Clients LAN Global Data Server Communication Communication Backbone Network Agent for Data Agent for OODBMS Application Clients Server Communication Global Agent for Data Data Server Server LAN RDBMS Local Data Global Data Server Server Software EngineeringSoftware Engineering Typical Informal Example of a Connectivity Drawing DistributedDatabaseArchitecture Tue, Oct 13, 1992 12:53 AM Application Client Application Client Application Client Communication Agent for Application Clients Communication Agent for Application Clients Communication Agent for Data Server Communication Agent for Data Server Local Data Server Global Data Server Global Data Server Global Data Server OODBMS RDBMS Backbone Network LAN LAN LAN TCP/IP Ethernet Physical Connectivity Logical Connectivity