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Systems analysis is "the process of studying a procedure or business to identify its goal and purposes and create systems and procedures that will efficiently achieve them". Another view sees systems analysis as a problem-solving technique that breaks a system down into its component pieces and analyses how well those parts work and interact to accomplish their purpose.
The field of system analysis relates closely to requirements analysis or to operations research. It is also "an explicit formal inquiry carried out to help a decision maker identify a better course of action and make a better decision than they might otherwise have made."
The terms analysis and synthesis stems from Greek, meaning "to take apart" and "to put together", respectively. These terms are used in many scientific disciplines, from mathematics and logic to economics and psychology, to denote similar investigative procedures. The analysis is defined as "the procedure by which we break down an intellectual or substantial whole into parts," while synthesis means "the procedure by which we combine separate elements or components to form a coherent whole." System analysis researchers apply methodology to the systems involved, forming an overall picture.
System analysis is used in every field where something is developed. Analysis can also be a series of components that perform organic functions together, such as systems engineering. Systems engineering is an interdisciplinary field of engineering that focuses on how complex engineering projects should be designed and managed.
Information technology
The development of a computer-based information system includes a system analysis phase. This helps produce the data model, a precursor to creating or enhancing a database. There are several different approaches to system analysis. When a computer-based information system is developed, system analysis (according to the Waterfall model) would constitute the following steps:
- The development of a feasibility study: determining whether a project is economically, socially, technologically, and organizationally feasible
- Fact-finding measures, designed to ascertain the requirements of the system's end-users (typically involving interviews, questionnaires, or visual observations of work on the existing system)
- Gauging how the end-users would operate the system (in terms of general experience in using computer hardware or software), what the system would be used for, and so on
Another view outlines a phased approach to the process. This approach breaks system analysis into 5 phases:
- Scope Definition: Clearly defined objectives and requirements necessary to meet a project's requirements as defined by its stakeholders
- Problem analysis: the process of understanding problems and needs and arriving at solutions that meet them
- Requirements analysis: determining the conditions that need to be met
- Logical design: looking at the logical relationship among the objects
- Decision analysis: making a final decision
Use cases are widely used system analysis modeling tools for identifying and expressing the functional requirements of a system. Each use case is a business scenario or event for which the system must provide a defined response. Use cases evolved from the object-oriented analysis.
Policy analysis
The discipline of what is today known as policy analysis originated from the application of system analysis when it was first instituted by United States Secretary of Defense Robert McNamara.
Practitioners
Practitioners of system analysis are often called up to dissect systems that have grown haphazardly to determine the current components of the system. This was shown during the year 2000 re-engineering effort as business and manufacturing processes were examined as part of the Y2K automation upgrades. Employment utilizing system analysis include system analyst, business analyst, manufacturing engineer, systems architect, enterprise architect, software architect, etc.
While practitioners of system analysis can be called upon to create new systems, they often modify, expand, or document existing systems (processes, procedures, and methods). Researchers and practitioners rely on system analysis. Activity system analysis has been already applied to various research and practice studies including business management, educational reform, educational technology, etc.
See also
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References
- System Analysis and Design for the Global Enterprise by Lonnie D. Bentley p.160 7th edition
- SYSTEMS ANALYSIS
- Tom Ritchey, Analysis and Synthesis.
- Radin, Beryl A. (2000). Beyond Machiavelli : policy analysis comes of age. Washington, D.C.: Georgetown University Press. ISBN 0878407731. OCLC 41834855.
- Géza HUSI: Mechatronics Control Systems
Selected publications
- Bentley, Lonnie D., Kevin C. Dittman, and Jeffrey L. Whitten. System analysis and design methods. (1986, 1997, 2004).
- Hawryszkiewycz, Igor T. Introduction to system analysis and design. Prentice-Hall PTR, 1994.
- Whitten, Jeffery L., Lonnie D. Bentley, and Kevin C. Dittman. Fundamentals of system analysis and design methods. (2004).
External links
- A useful set of guides and a case study about the practical application of business and system analysis methods
- A comprehensive description of the discipline of system analysis from Simmons College, Boston, MA, USA (Archive of original from www.simmons.edu)
- System Analysis and Design introductory level lessons
This article has multiple issues Please help improve it or discuss these issues on the talk page Learn how and when to remove these messages This article needs additional citations for verification Please help improve this article by adding citations to reliable sources Unsourced material may be challenged and removed Find sources Systems analysis news newspapers books scholar JSTOR February 2017 Learn how and when to remove this message This article may lend undue weight to the subject s applications in the field of information technology Please help improve it by rewriting it in a balanced fashion that contextualizes different points of view February 2017 Learn how and when to remove this message Learn how and when to remove this message Systems analysis is the process of studying a procedure or business to identify its goal and purposes and create systems and procedures that will efficiently achieve them Another view sees systems analysis as a problem solving technique that breaks a system down into its component pieces and analyses how well those parts work and interact to accomplish their purpose The field of system analysis relates closely to requirements analysis or to operations research It is also an explicit formal inquiry carried out to help a decision maker identify a better course of action and make a better decision than they might otherwise have made The terms analysis and synthesis stems from Greek meaning to take apart and to put together respectively These terms are used in many scientific disciplines from mathematics and logic to economics and psychology to denote similar investigative procedures The analysis is defined as the procedure by which we break down an intellectual or substantial whole into parts while synthesis means the procedure by which we combine separate elements or components to form a coherent whole System analysis researchers apply methodology to the systems involved forming an overall picture System analysis is used in every field where something is developed Analysis can also be a series of components that perform organic functions together such as systems engineering Systems engineering is an interdisciplinary field of engineering that focuses on how complex engineering projects should be designed and managed Information technologyThe development of a computer based information system includes a system analysis phase This helps produce the data model a precursor to creating or enhancing a database There are several different approaches to system analysis When a computer based information system is developed system analysis according to the Waterfall model would constitute the following steps The development of a feasibility study determining whether a project is economically socially technologically and organizationally feasible Fact finding measures designed to ascertain the requirements of the system s end users typically involving interviews questionnaires or visual observations of work on the existing system Gauging how the end users would operate the system in terms of general experience in using computer hardware or software what the system would be used for and so on Another view outlines a phased approach to the process This approach breaks system analysis into 5 phases Scope Definition Clearly defined objectives and requirements necessary to meet a project s requirements as defined by its stakeholders Problem analysis the process of understanding problems and needs and arriving at solutions that meet them Requirements analysis determining the conditions that need to be met Logical design looking at the logical relationship among the objects Decision analysis making a final decision Use cases are widely used system analysis modeling tools for identifying and expressing the functional requirements of a system Each use case is a business scenario or event for which the system must provide a defined response Use cases evolved from the object oriented analysis Policy analysisThe discipline of what is today known as policy analysis originated from the application of system analysis when it was first instituted by United States Secretary of Defense Robert McNamara PractitionersPractitioners of system analysis are often called up to dissect systems that have grown haphazardly to determine the current components of the system This was shown during the year 2000 re engineering effort as business and manufacturing processes were examined as part of the Y2K automation upgrades Employment utilizing system analysis include system analyst business analyst manufacturing engineer systems architect enterprise architect software architect etc While practitioners of system analysis can be called upon to create new systems they often modify expand or document existing systems processes procedures and methods Researchers and practitioners rely on system analysis Activity system analysis has been already applied to various research and practice studies including business management educational reform educational technology etc See alsoRelated topicsSystem thinking System architecture Software architecture Enterprise architecture Systems analyst Systems design Policy analysis Cybernetics Systems theory Types of system analysisAccident analysis Business analysis Cost effectiveness analysis cost benefit analysis DSRP Failure analysis Logico linguistic modeling Morphological analysis Soft systems methodology Software prototyping Spiral model Waterfall model System thinkersDonella Meadows Nancy Leveson Russell L Ackoff Howard T Odum Henry Paynter Jay Forrester Gregory Bateson Stewart Brand Buckminster Fuller Robert S McNamara Stafford Beer Ludwig von BertalanffyReferencesSystem Analysis and Design for the Global Enterprise by Lonnie D Bentley p 160 7th edition SYSTEMS ANALYSIS Tom Ritchey Analysis and Synthesis Radin Beryl A 2000 Beyond Machiavelli policy analysis comes of age Washington D C Georgetown University Press ISBN 0878407731 OCLC 41834855 Geza HUSI Mechatronics Control SystemsSelected publicationsBentley Lonnie D Kevin C Dittman and Jeffrey L Whitten System analysis and design methods 1986 1997 2004 Hawryszkiewycz Igor T Introduction to system analysis and design Prentice Hall PTR 1994 Whitten Jeffery L Lonnie D Bentley and Kevin C Dittman Fundamentals of system analysis and design methods 2004 External linksWikimedia Commons has media related to Systems analysis Look up systems analysis in Wiktionary the free dictionary A useful set of guides and a case study about the practical application of business and system analysis methods A comprehensive description of the discipline of system analysis from Simmons College Boston MA USA Archive of original from www simmons edu System Analysis and Design introductory level lessons
