Information Systems Development

Outline  Information System  Systems Development Project  Systems 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  What is it?  a planned undertaking to develop an information system.  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 Systems Analyst Translates a __________ __________ into an _________ ________ _________

SDLC  SDLC = ______ _________ ______ _______  What is it? The _______ that we go through to development an ________________ _________. – We go through the SDLC at least one time during a project. – Many projects today will cycle through these phases multiple times each called an iteration and thus we build the system incrementally. Planning Support Analysis Design Implementation

SDLC Phases Plan for a successful project! Determine: o Project scope  - Scope creep o Human Resources o Cost o Time o Quality o 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 needs 3.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 software 2. Design the details of the new system Planning Analysis Design Design Phase

SDLC Phases Prepare and install the system Steps 1.Develop programs 2.Test 3.Train 4.Install Direct Parallel Phased Pilot Planning Analysis Design Implementation Implementation Phase

SDLC Phases Support and maintain the system Steps 1.Operate 2.Maintain 3.Monitor performance 4.Assess security Planning Support Analysis Design Implementation Operation, Support, Security Phase