Chapter 10: System Architecture

Time & Cost

provides detailed schedules, cost estimates, and staffing requirements for the systems development phase and revised projections for the remainder of the SDLC

System Design specification

a document that presents the complete design for the new IS, detailed costs, staffing, and scheduling for completing the next SDLC

Extended Service Set (ESS)

a wireless network configuration made up of two or more BSS networks, which allows wireless clients to roam from BSS to BSS

Gateway

in business processing model, a fork in the process, allowing the flow to go one way or another

Network topology

the way a network is configured

Distributed database management system (DDBMS)

a system for managing data stored at more than one location

Thin Client

a system design that locates most or all of the application processing logic at the server

Client/server architecture

systems that divide processing between one or more networked clients and a central server

Local area network (LAN)

a network design that allows the sharing of data and hardware

Mainframe architecture

a system design where the server performs all the processing

Corporate portal

a website providing tools and features for an organization's customers, employees, suppliers, and the public

ERP

a company-wide strategy for using IT that includes a specific architecture, standards for data, processing, network, and UI design

Logical Design

a conceptual, abstract process that defines the types of information needed and arranges data into logical relationships