Information SystemsDevelopment

Outline

Information System Systems Development ProjectSystems Development Life Cycle

Information System - defined

System (def)

Subsystem

Information System• Software, Hardware, Data,

Procedures, People

• Common Goal: – Producing quality _____________ in

order to support operations, management, and the decision making needs of an organization.

• Examples

Systems Development Project

How does the idea for a new project come about? Problem Opportunity

Who is involved in the development of the system? Users Steering Committee Vendors Information Technology Department

Information Technology Department

• Managers

• Analysts– Systems Analyst (def)

– Business Analyst

• Data Experts– Data Analyst

– Database Administrator

– Data Warehouse Specialist• Corporate DB (operational)• Data Warehouse (historical)• Data mining (patterns)

• Programmers– Application Developer– Web Developer

• Others– Security Specialist– Network Administrator

SystemsAnalyst

Translates a __________ __________ intoan _________ ________ _________

SDLC

SDLC = ______ _________ ______ _______

What is it?

Planning SupportAnalysis Design Implementation

SDLC Phases

Plan for a successful project!• Determine:

o Project scope -Scope creepo Human Resourceso Costo Timeo Qualityo Schedule

Planning

Planning Phase

SDLC Phases

Determine ______ the new system should do. Steps:

1. Study how the current system works• Information Gathering Techniques

2. Identify problems and needs3. Conduct a Feasibility Study

• Economic, Operational, Schedule, Technical, Political

4. Recommend a solution

Planning Analysis

Analysis Phase

SDLC Phases

Determine _______ the new system will accomplish the tasks.• Steps:

1. Acquire hardware and software2. Design the details of the new system

Planning Analysis Design

Design Phase

SDLC Phases

Prepare and install the system• Steps

1. Develop programs2. Test3. Train4. Install

• Direct• Parallel• Phased• Pilot

Planning Analysis Design Implementation

Implementation Phase

SDLC Phases

Support and maintain the system• Steps

1. Operate 2. Maintain3. Monitor performance4. Assess security

Planning SupportAnalysis Design Implementation

Operation, Support, Security Phase