System Development Life Cycle OR The Recollections of an old

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System Development Life CycleORThe
Recollections of anold EDP Guy
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Common Terms
Common Terms

• Software
• The entire set of computer programs, procedures
  and related documentation associated with a
  system - The New Merriam -Webster Dictionary
• Information
• Timely or Specific Knowledge - Funk Wagnall
• System
• The connection of the parts as related to the
  whole - Funk Wagnall

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Computer Based Products

• Systems Software
• Software that communicates between the Hardware
  Application Software
• Business Information System
• An interactive source of Timely Specific
  Knowledge required to competitively operate a
  business.
• Firmware
• Software logic that has been burned into a PROM
  that is embedded into a product to replace
  mechanical parts.
• Entertainment
• And the list continues to Grow

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System Development Life Cycle

• Generally begins with an Owner or Top level
  Executive having a business problem
• They will contact their CIO or an outside
  Consulting firm. A Project Manager that
  specializes in the troubled area of the business
  will be assigned.
• A Project Manager is a Business Problem solver
  that specializes in analysis, design, developing
  and maintaining business information systems that
  improves the business performance of the Company.
• Knowledge Skills required by a Project Manager
  are Technical, Business/Engineering, and People
•  

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System Development Life Cycle

• Project Planning
• Staffing Project Manager, Sr. Systems Analyst
  and Sr. User Management
• Tasks
• Define the Project objectives and scope Content.
• Produce the Project Schedule (Tasks, Resources
  needed Milestones) Time Cost.
• Confirm project feasibility
• Business Value (Cost vs Return)
• Obtain User Agreement on (User Support, Content,
  Time Cost)
• Now you have a Contract

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System Development Life Cycle

• Project Planning
• Tasks
• Staff the Project (The success of a software
  development project is associated directly with
  having good smart people on the project)
• Launch the Project

Content
The Project
PROJECT
Cost
Time
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System Development Life Cycle

• Project Analysis
• Staffing Project Manager, Sr. Systems Analyst
  and Sr. User
• Tasks
• Gather Information Understand the business info.
  needs and requirements With User
• Define Systems Requirements With User
• Prioritize Requirements With User

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System Development Life Cycle

• Project Design
• Staffing Proj. Mgr., Sr. Sys Analyst and Sr.
  User
• Tasks
• Design Overall System that meets the business
  needs and requirements. With User
• Design application architecture for phased
  development.
• Design the User interfaces. With User
• Design the System interfaces
• Design Integrate the Database, Network System
  controls With User

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System Development Life Cycle

• Project Development
• Staffing Project Manager, Systems Analysts,
  Programmers, DB Programmers, Systems Programmers
  and Sr. Users
• Phased Construction Tasks
• Quality Assurance -Technical reviews
  Walkthroughs.
• Dev., Test Integ -One Phase at a time with
  User
• Source Code Control - Versioning
• Documentation Both System and User
• Obtain User Agreement Test and Integrate Phase
• Plan Next Module Go back to Quality Control
  till all project requirements are met

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System Development Life Cycle

• Project Implementation
• Staffing Project Manager, Systems Analysts,
  Programmers, DB Programmers, Systems Programmers
  and Users
• Tasks
• Data Conversion Load Database
• Installation of Hardware, Network and Software
• Finalize Documentation Both System and User
• Train Users
• Run a live production Tests with Users
• Turn over the system to the User

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System Development Life Cycle

• Systems Support
• Staffing Sr. Systems Analyst, Programmers, Users
  and User Management
• Tasks
• On-going Training and User support
• Maintenance System Enhancements - with User
• Implementing Changes with User
• Maintain Source Code Control Versioning
• Update Documentation Both System and User
• Upgrading Computer Infrastructure

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The Recollections of an old EDP GUY

• After you have planned and staffed your System
  Development Project
• The three most important things to do are
• 1. Keep the User involved Establish User
  Ownership from the start
• Control, Control, Control at all levels Content,
  Time and Cost
• Develop a User Wish List of additional
  Requirements Do not give it away