ITM 305 Chapter Notes -Component-Based Software Engineering, Maintainability, Access Control

• School: Ryerson University
• Department: Information Technology Management
• Course: ITM 305
• Professor: Jim Tam

Document Summary

An important component of the design of an information system is the design of the physical architecture layer, which describes the system"s hardware, software, and network environment. A three tiered architecture uses three sets of computers. The software on the client computer is responsible for presentation logic. An application server(s) responsible for the application logic. A separate database server(s) is responsible for data access logic and data storage. N-tiered architecture uses more than three sets of computers. A database server(s) is responsible for the data access logic and data storage. The application logic is spread across two or more different sets of servers. The second component us a web server that responds to the user"s requests, either by providing (html) pages and graphics (application logic) or by sending the request to. The third component (a set of twenty-eight programs written in the c programming language) on another application server that performs various functions (application logic).