Information Systems Development & Management

4/09/2013

What is Systems Development?

Definition:

Systems Development is the process of creating and maintaining information systems.

You are a project manager …

What is Systems Development?

Involves all five IS components:• Hardware• Software• Data• Procedures• People.

What is Systems Development?

• Must be a team effort.What if all of the emphasis of a team’s management was placed on who they drafted?

• Remember: IS is more than technology.

Systems Development Challenges

• Requirements determination

• Requirements creep

• Schedule / budgeting difficulties

• Changing technology

• Diseconomies of scale.

The Five Phases of the SDLC

• System Definition

• Requirements Analysis

• Component Design

• Implementation

• System Maintenance

The Five Phases of the SDLC

System Definition

• Based on competitive strategy.• Results in clear definitions:

• Goals & Objectives• Scope• Cost• Feasibility

System Definition

• Question: “What do we want the system to do?”

• Discuss with top-level management.

• Crystalize an objective statement.

Define Requirements

• User-focused

• Goal: lessen "creep" build buy-in.

Component Design

Identify specific tasks for each of the five IS components.

•Build a timeline with target dates.

• Color-code for departments or state of completion.

• Use a shared document.

• Meet with key people regularly.

Component Design

• Hardware design: Purchase it, lease it, or lease time

from hosting service

• Software design: Off-the-shelf, custom developed

• Database design: Convert data model to a database

design

• Procedure design: Normal, backup, failure recovery

procedures

• Design of job descriptions

Process Design

• Normal Operations Procedures

• Backup Procedures

• Failure Procedures

• Document using process notebooks or

team wiki

Implementation

• System Testing• System Conversion

o Pilot o Phased o Parallelo Plunge

• Training

Maintenance

• Hardware repairs

• Software patches

• System documentation

• Continuing user training