Systems Development For Information Systems

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Traditional systems development life cycle (SDLC)

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is a structured step-by-step approach to developing systems that creates a separation of duties among technology specialists and users.

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Systems investigation

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is the first phase of the traditional systems development life cycle (SDLC) in which you seek to lay the foundation for the systems development process.

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Systems analysis phase

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of the systems development life cycle (SDLC) involves modeling how the current system works from a logical point of view, identifying weaknesses and opportunities, creating a logical model of the new system, and reviewing the project plan.

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Systems analyst

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is a technology specialist who understands both technology and business processes.

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Systems design phase

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of the systems development life cycle (SDLC) involves generating several alternative technical solutions for the new logical model, selecting the best technical alternatives, developing detailed software specifications, and - once again - reviewing the project plan.

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Systems implementation phase

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of the systems development life cycle (SDLC) involves training users, converting existing information to the new system, converting users, acceptance testing, and reviewing the project plan.

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Systems programmer

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is a programmer who writes operating system and utility software.

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Request for proposal (RFP)

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is a formal document that outlines for your logical requirements for the proposed system and invites outsourcing vendors to bid on its development.

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Project manager

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is the person who oversees the project from beginning through implementation and support.

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Data flow diagramming (DFD)

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is a modeling technique for illustrating how information moves through various processes and how people outside the system provide and receive information.

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Chief information officer (CIO)

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is a formal, documented process in which users use the new system, verify that is the person within your organization who oversees the use of information as a resource.

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End user development

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is the development and support of computer systems by users (such as yourself) with little or no help from technology specialists.

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Parallel conversion

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is a conversion method in which you run both the old and new system until you're sure the new system works correctly.

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Plunge conversion

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is a conversion method in which you literally unplug the old system and use the new system exclusively.

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Piecemeal conversion

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is a conversion method in which you target only a portion of the new system for conversion, ensure that it works correctly, and then convert the remaining system.