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MIS
Vocab
Question | Answer |
---|---|
Traditional Systems Development Life Cycle | Systems Investigation, Analysis, Design, Implementation, Maintenance and Review |
Systems Development | An activity of creating new systems or modifying existing business systems with the goal of improving both internal and external processes. |
Stakeholders | individuals who either themselves or through the organization they represent, ultimately benefit from the systems development project |
Users | individuals who will interact with the system regularly |
Systems Analyst | a professional who specializes in analyzing and designing business systems. Often the only person who sees the system in its totality. |
Programmer | the specialist responsible for modifying or developing programs to satisfy user requirements. |
Systems Investigation-Operational Feasibility Analysis | Whether the project can be put into action/operation |
Systems investigation | 3 steps - initiate systems investigation; conduct feasibility analysis; produce systems investigation report |
Systems Investigation - initiating: Systems request form | formal document to initiate systems investigation that includes probles/opportunities for the system; objectives; overview of proposed systems; and expected costs & benefits |
Systems Investigation - Tech Feasibility Analysis | Whether the hardware, software and other system components can be acquired or developed to solve the problem |
Systems Investigation-Economic Feasibililty Analysis | Whether it makes financial sense; do the benefits offset the cost and time needed |
Systems Investigation-Legal Feasibility Analysis | Whether the laws/regulations allow the system development project |
Systems Investigation-Schedule Feasibility Analysis | Whether the project can be completed in a reasonable amount of time |
Systems Investigation- 5 Feasibility Analyses | Technical, Economic, Legal, Operational, Schedule |
Four steps of Systems Analysis | Data Collection, Data Analysis,Requirements Analysis, Systems Report |
Systems Analysis - Data Collection | Seeks addtional info about problems, identifies strengths and weaknesses, techniques such as interviews, surveys, direct observation; and involves both internal & external sources |
Systems Analysis - Data Collection | Manipulates collected data to be usable and uses data modeling and activity modeling with entity-relationship diagrams and data flow diagrams |
Systems Analysis - Requirements Analysis | Identifies user, stakeholder and organizational needs for the new or modified system; and studies problems they are having with the current system and improvements they suggest |
Systems Analysis - the report | Should coverstrengths & weaknesses of the existing system from a stakeholder's perspective; the user/stakeholder requirements for the new system; the organizational requirements for the new system; and a description of new system to solve problem |
Systems design - two dimensions | Logical and Physical |
Systems design - Logical design | - description of the functional requirements of the system; |
Systems design - Physical design | - specification of the characteristics of the system components necessary to put the logical design into action |
Systems design - 3 steps | Generate systems design alternatives, evaluate and select a system design; and develop the design report |
Systems design- Generating system design alternatives | Use in-house resources and Initiate a RFP (Request for ProposalO |
Systems Design - RFP | One of most important docs in systems development; results in a formal bid to determine who gets a contract; and specifies detail required resources |
Systems Design - evaluating & selecting a system design | evaluate alternative and select best solution, preliminary evaluation followed by final evaluation; and compare cost, performance, service, flexibility, etc |
Systems Design - Develop Systems design report | detail systems inputs, outputs & user interfaces; specifies hardware, software, databases, telecommunications, personnel & procedures; and shows how these components are related |
Systems Implementation | creation of system components and place system in operation; important task is to train users; and results in operational informational system that meets the business needs |
Steps of Systems implementation | hardware acquisition, software acquisition, user preparation, personnel - hiring and training, site preparation, data preparation, installation, testing, start up, and user acceptance |
Systems Implementation - Start up What is direct conversion | stopping the old system and starting the new system on a given date. |
Systems Implementation - Start up what is phase in | slowly replacing components of the old system wiht those of the new system |
Systems Implementation - Start up what is pilot start up | running the new system for one group of users rather than for all users |
Systems Implementation - Start up what is parallel start up | running both the old and new systems for a period of time |
Systems Implementation - Start up what are different ways to start up? | direct conversion, phase in, pilot start up, and parallel start up |
Systems Development Approaches what is traditional SDLC | systems investigation, systems analysis, systems design, systems implementation, and systems maintenance and review |
Systems Development Approaches what is prototyping? | iterative approach to systems development |
Systems Development Approaches what is rad? (rapid application development) | Employes tools, techniques & methods designed to speed application development and reduces paper based documentation, automatically generates program source code & facilitates user participation |
Systems Development Approaches What is end user development | Any systems development project where the primary effort is undertaken by a combination of business managers and users. IS professionals offer guidance & support |
four types of systems development approaches | Traditional SDLC, prototyping, rad, end user development |