Explain the phases in the development of information system. Which is the most critical phase and why?
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Answer:
The Planning phase is the most crucial step in creating a successful system, during this phase you decide exactly what you want to do and the problems you're trying to solve, by: Defining the problems, the objectives and the resources such as personnel and costs.
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An information system can be thought of as a collection of connected components that work together to transform one input into a specific output. A MIS (Management Information System), which is the next stage of an information system and has a higher level of sophistication, is utilized ultimately for the purposes of analysis and decision-making.
Explanation:
- Planning, analysis, design, development, testing, implementation, and maintenance are all included in the development of an information system.
- System Identification, System Selection, and System Planning are the three key components of the SLDC phase.
- System requirements analysis is a strategy for problem-solving that breaks the system down into its component parts. The only objective is to learn more about how each component functions and how it interacts with other components.
- Design - The goal of system design is to give the IT team, particularly programmers, a thorough blueprint to follow as they create applications. As a result, the IT staff no longer makes choices or operates in an ad hoc manner.
- Implementation: This information system's development stage involves carrying out a previously planned development.
- Testing: A system must be tested to determine whether the development work was appropriate and produced the desired results. Various tests are used, including ones for output, performance, input effectiveness, syntax (programme logic), and others.
- Maintenance and Change- This step encompasses the entire procedure to guarantee system continuity, efficiency, and improvement. Maintenance comprises activities to predict minor defects (bugs), system enhancements, and anticipation of some dangers from sources outside the system in addition to monitoring the system at a specific time.
Thus this is the answer.
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