System Analysis and Design
System Analysis and Design – SAD, pinalungkot talaga ako ng subject na to nung time na nawala yung records ng exam namin don, isa pa naman ako sa mga pasado dun tas nawala lang sayang din un! Hahaha enweiz anu nga ba ang subject na to?
The subject System Analysis and Design, mainly deals with the software development activities. Nung pinagaaralan pa namin ang subject na to nadiscuss din kung ano ang information system, pano ka mag-aanalyzed ng isang problem and paano mo ito iaaply into blueprint or design using different methodologies, tools and techniques. This subject will first make you familiar sa mga tao beyond a developed system or yung mga System Stakeholders, which is the syempre yung System Owners, System Users, System Designers, System Builders, and yung Project Team which is the Business Analyst, System Analyst, Infrastructure Analyst, Change Management Analyst and Project Manager. Mai-introduce din sa subject na to ang System Development Life Cycle at ang System Development Methodologies. Ano-ano nga ba ang mga namentioned? Simulan natin sa information system.
Information System (IS) captures and manages data to produce useful information that supports an organization and its employee, customers, suppliers and partners. It is also an arrangement of people, data, process and information technology that interact to collect, process, store and provide as output the information needed to support an organization. System Owners ito yung viniview ang IS in terms of costs and benefits to solve problems. System Users naman view IS in terms of functionality. System Designers view IS in terms of a design blueprint to guide the construction of the final system. And the System Builders, view IS in terms of actual working hardware and system to implement the system and they construct the system according to the system designers specifications.
Project teams
Business Analyst - Analyzing the key business aspects of the system
- Identifying how the system will provide business value
- Designing the new business processes and policies
Systems analyst - Identifying how technology can improve business processes
- Designing the new business processes
- Designing the information system
- Ensuring that the system conforms to information systems standards
Infrastructure analyst - Ensuring the system conforms to infrastructure standards
- Identifying infrastructure changes needed to support the system
Change management analyst - Developing and executing a change management plan
- Developing and executing a user training plan
Project manager – ensures that the systems are developed on time, within the budget and with acceptable quality.
- Managing the team of analysts, programmers, technical writers, and other specialists
- Developing and monitoring the project plan
- Assigning resources
- Serving as the primary point of contact for the project
System Development Life Cycle
System development life cycle means combination of various activities. In other words we can say that various activities put together are referred as system development life cycle. In the System Analysis and Design terminology, the system development life cycle also means software development life cycle.
System Development Methodologies
A methodology is a formalized approach to implementing the System development life cycle. There are many different systems development methodologies and each one is unique because of its emphasis on processes versus data and the order and focus it places on each SDLC phase
1. Process-centered methodologies focus first on defining the activities associated with the system, the processes.
2. Data-centered methodologies focus first on defining the contents of the data storage containers and how the contents are organized.
3. Object-oriented methodologies attempt to balance the focus between processes and data. Object-oriented methodologies utilize the Unified Modeling Language (UML) to describe the system concept as a collection of objects incorporating both data and processes.
Ang Waterfall Development naman is the original structured design methodology. With waterfall development-based methodologies, the analysts and users proceed sequentially from one phase to the next.
Na turo din samin ang iba’t-ibang tools and techniques used for describing the system design of the system or ung UML, ito yung Flow Chart, DFD, Fishbone Diagram.
Few details palang to about System Analysis and Design. To learn more view links below.
Links:
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Elauria, Kenberlyn R.
200910286
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