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MSC Systems Analysis
Ch 9
28
Other
Undergraduate 3
05/16/2007

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Term
architectural design
Definition
broad design of the overall system structure; also called general design or conceptual design
Term
business logic layer
Definition
the part of three-layer architecture that contains the programs that implement the business rules of the application
Term
centralized architecture
Definition
architecture that locates all comuting resources in a central location
Term
client
Definition
a process, module, object, or computer that requests services from one or more servers
Term
clustered architecture
Definition
a group of cumputers of the same type that share processing load and act as a single large computer system
Term
computer network
Definition
a set of transmission lines, equipment, and communication protocols to permit sharing of information and resources
Term
data layer
Definition
the part of three-layer architecture that interacts with the database
Term
detail design
Definition
low-level design that includes the design of specific program details
Term
distributed architecture
Definition
architecture that deploys computing resources in multiple locations connected by a computer network
Term
extranet
Definition
an intranet that has been extended outside the organization to facilitate the flow of information
Term
interface designers
Definition
specialists in user-interface design; also called usability consultants or human factors engineers
Term
internet
Definition
a global collection of networks that use the same networking protocol - TCP/IP
Term
intranet
Definition
a private network that is accessible to a limited number of users, but which uses the same TCP/IP protocol as the internet
Term
local area network (LAN)
Definition
a computer network in which the distances are local, such as within the same building
Term
middleware
Definition
compter software that implements communication protocols on the network and helps different systems communicate
Term
multicomputer architecture
Definition
a group of dissimilar computers that share processing load through specialization of function
Term
multi-tier architecture
Definition
architecture that distributes application-related software or processing load across multiple computer systems
Term
network diagram
Definition
a model that shows how application layers are distributed across locations and computers systems
Term
router
Definition
network equipment that directs information within the network
Term
server
Definition
a process, module, object, or computer that provides services over a network
Term
single-computer architecture
Definition
architecture that employs a single computer system executing all application-related software
Term
three-layer archtecture
Definition
a client/server architecture that divides an application into the view layer, business logic layer, and data layer
Term
view layer
Definition
the part of three-layer architecture that contains the user interface
Term
virtual organization
Definition
a loosely coupled group of people and resources that work together as though they were an organization
Term
virtual private network (VPN)
Definition
a network that has security and controlled access for a private group but is built on top of a public network such as the internet
Term
web services architecture
Definition
a client/server architecture that packages software into server processes that can be accessed via web protocols
Term
wide area network (WAN)
Definition
a computer network spread across large distances, such as a city, state or nation
Term
world wide web (WWW) or web
Definition
a collection of resources, such as files and programs, that can be accessed over the internet using standard protocols
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