World Library  
Flag as Inappropriate
Email this Article

Systems analysis

Article Id: WHEBN0000045002
Reproduction Date:

Title: Systems analysis  
Author: World Heritage Encyclopedia
Language: English
Subject: Systems science, Systems engineering, Systems modeling, Hard systems, System
Collection: Financial Analysts, Futurology, Management, Systems Analysis, Systems Engineering, Systems Theory, Technology Assessment
Publisher: World Heritage Encyclopedia
Publication
Date:
 

Systems analysis

"Systems analysis is a problem solving technique that decomposes a system into its component pieces for the purpose of the studying how well those component parts work and interact to accomplish their purpose".[1] According to the Merriam-Webster dictionary, systems analysis is "the process of studying a procedure or business in order to identify its goals and purposes and create systems and procedures that will achieve them in an efficient way". Analysis and synthesis, as scientific methods, always go hand in hand; they complement one another. Every synthesis is built upon the results of a preceding analysis, and every analysis requires a subsequent synthesis in order to verify and correct its results.

This field is closely related to requirements analysis or operations research. It is also "an explicit formal inquiry carried out to help someone (referred to as the decision maker) identify a better course of action and make a better decision than she might otherwise have made."[2]

Contents

  • Overview 1
  • Information technology 2
  • Practitioners 3
  • See also 4
  • References 5
  • External links 6

Overview

The terms analysis and synthesis come from Greek where they mean respectively "to take apart" and "to put together". These terms are used in scientific disciplines from mathematics and logic to economics and psychology to denote similar investigative procedures. Analysis is defined as the procedure by which we break down an intellectual or substantial whole into parts. Synthesis is defined as the procedure by which we combine separate elements or components in order to form a coherent whole.[3] Systems analysis researchers apply methodology to the analysis of systems involved to form an overall picture. System analysis is used in every field where there is a work of developing something. Analysis can also be defined as a series of components that perform organic function together. An example of system analysis can be system engineering. Systems engineering is an interdisciplinary field of engineering that focuses on how complex engineering projects should be designed and managed. An interdisciplinary field is the combining of two or more fields of study. An example of this would be history (one academic field) and economics (another academic field) department are offering a seminar on Asia.

Information technology

The development of a computer-based information system includes a systems analysis phase which produces or enhances the data model which itself is a precursor to creating or enhancing a database (see Christopher J. Date "An Introduction to Database Systems"). There are a number of different approaches to system analysis. When a computer-based information system is developed, systems analysis (according to the Waterfall model) would constitute the following steps:

  • The development of a feasibility study, involving determining whether a project is economically, socially, technologically and organizationally feasible.
  • Conducting fact-finding measures, designed to ascertain the requirements of the system's end-users. These typically span 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 systems analysis into 5 phases:

  • Scope Definition: which is denoting an instrument for observing, viewing, or examining.
  • Problem analysis: Analyzing the problem that arises.
  • Requirements analysis: encompasses the conditions that need to be met.
  • Logical design: look at logical relationship among the objects.
  • Decision analysis: where a decision is made.

Use cases are a widely used systems analysis modeling tool 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 out of object-oriented analysis.

Practitioners

Practitioners of systems 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.[4] Employment utilizing systems analysis include systems analyst, business analyst, manufacturing engineer, systems architect, enterprise architect, software architect, etc.

While practitioners of systems analysis can be called upon to create new systems, they often modify, expand or document existing systems (processes, procedures and methods). Rearchers 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.

A set of components interact with each other to accomplish some specific purpose. Systems are all around us. Our body is itself a system. A business is also a system. People, money, machine, market and material are the components of business system that work together that achieve the common goal of the organization.

See also

References

  1. ^ Systems Analysis and Design for the Global Enterprise by Lonnie D. Bentley p.160 7th edition
  2. ^ SYSTEMS ANALYSIS
  3. ^ Tom Ritchey, Analysis and .
  4. ^ Géza HUSI: Mechatronics Control Systems

External links

  • Introduction to Social Macrodynamics
  • A useful set of guides and a case study about the practical application of business and systems analysis methods
  • A comprehensive description of the discipline of systems analysis from Simmons College, Boston, MA, USA (Archive of original from www.simmons.edu)
  • Systems Analysis and Design introductory level lessons
This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and USA.gov, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for USA.gov and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
 
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
 
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.
 



Copyright © World Library Foundation. All rights reserved. eBooks from World eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.