CSC 364

1
CSC 364

• Information Systems Development

2
CSC 364 - SDLC

• System - a set of components that interact to
  achieve a common goal.
• Components of an I.S
• Hardware
• Software
• Data
• People
• Procedures

3
CSC 364 - SDLC

• Goal of an I.S - to provide users with high
  quality information so they can make effective
  decisions.
• S.D.L.C. - System Development Life Cycle
• an organized set of activities that guides those
  involved through the development of an
  Information System

4
CSC 364 - SDLC

• Phases of SDLC
• Planning
• Analysis
• Design
• Implementation
• Support

5
CSC 364 - SDLC

• Guidelines for Systems Development
• Use a Phased Approach
• Involve the Users
• USER BUYIN is critical
• Develop Standards
• Standards are a set of rules and procedures that
  an organization expects employees to accept and
  follow

6
CSC 364 - SDLC

• Project Management
• the process of planning scheduling, and
  controlling the activities during the SDLC
• The goal of project management is to deliver an
  acceptable system to the user in an agreed upon
  time frame, while maintaining costs
• Project Management software (Microsoft Project)
  enables project leaders to plan,schedule and
  control projects effectively effeciently

7
CSC 364 - SDLC

• Components of a Project
• The scope (the goals and objectives)
• Activities to be completed
• Time estimates for each activity
• Cost estimates for each activity
• Order in which activities must occur
• Activities that may be performed concurrently

8
CSC 364 - SDLC

• Feasibility - a measure of how suitable the
  development of the system will be.
• Operational Feasibility - measures how well the
  system will work in the firm
• Schedule Feasibility - measures whether the
  deadlines for the project are reasonable
• Technical Feasibility - measures whether the firm
  has or can obtain the HW, SW, etc to deliver and
  support the system.

9
CSC 364 - SDLC

• Economic Feasibility (Cost/benefit) measures
  whether the lifetime benefits will exceed the
  lifetime costs.
• Documentation - KEEP EVERYTHING
• Keep project notebook

10
CSC 364 - SDLC

• Data Gathering Techniques
• Review Current System
• Observing
• Questionnaires
• Interviewing (Mary Brown )
• JAD Sessions
• Research

11
CSC 364 - SDLC

• Planning Phase
• Review the project requests
• prioritize requests
• allocate resources
• identify team

12
CSC 364 - SDLC

• Analysis Phase
• Conduct preliminary investigation
• Feasibility Study
• Perform detailed analysis
• Study current system
• determine users wants, needs and requirements
• recommend a solution
• BUILD OR BUY????????????????

13
CSC 364 - SDLC

• Design Phase
• Acquire hardware and software
• RFP vs RFI
• develop details of the information system to be
  implemented

14
CSC 364 - SDLC

• Implementation Phase
• Develop programs when necessary
• install and test new system
• train and educate users
• convert to new system

15
CSC 364 - SDLC

• Support Phase
• Conduct post implementation review
• identify errors
• identify enhancements
• monitor and benchmark system performance