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System Analysis Design

In: Computers and Technology

Submitted By mikkilaila
Words 434
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A number of system development life cycle models have been created for support an improvement of an organisation these are; fountain, waterfall, spiral, agile RAD- Rapid Application Development. One of the oldest is the waterfall: a sequence of stages in which the output of each stage becomes the input for the next.
RAD- rapid application development
Fountain
Spiral
Agile

These stages can be characterized and divided up into different ways such as;
Feasibility study enabling a high level view of intended project and determine its goal
System analysis: Analysing end users information needs and defining project goals in terms of functionality and operation of intended project
System design: Describes desired features and operation in detail, including screen layout business rules, process diagram and other documentation.
Implementation
Integration and testing: Brings all the pieces together into special testing environment, then checks for errors and bugs.
Acceptance: The final stage of initial development, where the software is put into production and runs actual business.
Maintenance: What happens during the rest of software’s life: changes, correction, additions, moves to different computing platform and more.

The importance of following a procedural/staged life cycle in a system investigation is

The role played in information systems development by the system analyst
The importance of linking information system to business needs are;

In general, an SDLC methodology follows the following steps:
1. The existing system is evaluated. Deficiencies are identified. This can be done by interviewing users of the system and consulting with support personnel.
2. The new system requirements are defined. In particular, the deficiencies in the existing system must be addressed with specific proposals for improvement.
3. The proposed system

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