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Module 1: Gerenciamento de projetos, a fase de análise

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A Fase de Análise: fluxo de informações e necessidades documentados usando ferramentas de modelagem do sistema

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XSIQ
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Information Technology - The Analysis Phase: information flow and needs
documented using system modeling tools

The Analysis Phase: information flow and needs documented using system
modeling tools

Image. Seavision Multimedia. Information flow within the company showing how
the various employees interact with each other in the system.

An important phase in the development of the new system is the
documentation of the information flow within the existing system. In this
step, all the data in the system is recorded from when it is received,
through manipulation in the system, until the final information is
produced. In each phase it is important to note who is providing the system
with the data, performing the manipulation and receiving the information
that is produced.

There are a number of tools that are used to represent these features -
Data flow Diagrams (DFDs), Context Diagram and Entity Relationship
diagrams. The reason why this stage is so important, is that it allows the
analyst to develop a complete understanding of the way in which the various
parties interact with each other in the system, and thus design a system
that will be responsive to the needs of all of the parties involved. It
also has the benefit of identifying the areas in which the company has
direct control, and those for which it must rely on outside sources.
Obviously, when designing a new system, there is no point in changing areas
which the company has no control over, such as specifying data must be
received in a particular way, when the person who is supplying that data is
under no pressure or obligation to change the way in which they supply the
data.

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