Where Do Systems Come From - Terry College of Business

cottonseedfearnotElectronics - Devices

Nov 7, 2013 (3 years and 9 months ago)

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A Day’s worth of MIS “Terms”


Micro Computer (PC)

Mini Computer

Mainframe Computer

TCP/IP

Packet Switched vs. Circuit Switched

WAN vs. LAN

File

Database

Database Management System

Data Warehouse

Operating System

Application System

Systems Development

Systems Development Life Cycle

Prototypical Design, Iterative Design

Where Do Information Systems
Come From?


The “Systems Development Life Cycle”


Internal


Outsourced


Prototyping and Iterative Design


Internal


Outsourced


End User Development


Off the Shelf Packages


Small Packages


Big Packages (ERP)


Customization/Configuration

Project

Identification

and Selection

Project

Initiation and

Planning

Analysis



Logical

Design


Physical

Design


Implementation



Maintenance



The Systems Design Life Cycle

Requirements Determination

Requirements Structuring

Alternative Generation / Selection

DFDs

Logic

ERDs

Forms and Reports

Dialogues and Interfaces

Logical Databases

Physical Files/Databases

Program Design

Distributed Syst. Design

Planning

Analysis

Design

Implementation

The SDLC

Or: The Waterfall Approach

Planning

Analysis

Design

Implementation

Evaluation

Quit

Prototyping and
Iterative Design

Stages of Systems Development


Planning: What is the problem/opportunity we should address?


what are alternatives and their feasibility?


which one should we pursue?

Analysis: What specifically should the system do?


And how (logically) will it do this?

Design: How will we produce the system, and how (specifically

and physically) will the system will do what it does.

Implementation: Actually build it. Program it, test it, train


users, convert old systems, establish new work


processes, turn it on. [Maintain it!]

Business Side Vs. IS Side Involvement


Where should the business side of the organization

be heavily involved in the process?


Planning

Analysis

Design

Implementation