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7 PHASES OF SDLC, ALTERNATIVES SYSTEM DEVELOPMENT METHODOLOGIES - Coggle…
7 PHASES OF SDLC
- Identifying Problems, Opportunities, and Objectives
ACTIVITY:
-Interview the user management
-Summarize the knowledge obtained
-Estimate the project scope
-Documenting the results
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- Determining human information requirements
System analyst determine the current system functions with 5W 1H (who, what, where, when, why, how)
ACTIVITY:
-Interviewing
-Sampling and investing hard data
-Questionnaires
-Observe the decision maker's behavior and environment
-Prototyping
-Learn the 5W 1H of the current system
OUTPUT:
-Able to understand on how to accomplish work using computer
-Able to understand on how to make the new system become more useful and usable
3.Analyzing system needs
ACTIVITY:
-Data Flow Diagrams
-Data dictionary
-Structured decisions made
-Structured decision methods
(structures English, decision tables, decision tress)
-System proposal
OUTPUT:
-The recommendation and solution are based on the analysts individual qualities and professional training, including their interaction with the users.
ACTIVITY:
-Uses the information collected earlier to accomplish the logical design of the information system.
-Design the procedures
-Design effective input
-Device HCl
-Design database and data storage
-Design effective output
-Design controls and backup procedures
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- Testing and Maintaining the System
ACTIVITY:
-Testing needs to be done by both programmer and analyst
-Testing needs to be done first with the sample data, then the actual data
-The maintenance needs to be carried out routinely through the entire life of the system
-Updates may be performed via a vendor website on the Web
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