N four installation strategies direct installation

  • University of Texas
  • CIS 520
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nFour installation strategies:¤Direct Installation.¤Parallel Installation.¤Single­location installation.¤Phased Installation.17.2117.21
Direct InstallationnDirect installation: changing over fromthe old system to a new one by turning offthe old system when the new system isturned on.22Chapter 15
Parallel InstallationnParallel installation: running the oldinformation system and the new one at thesame time until management decides theold system can be turned off.23Chapter 15
Single­Location InstallationnSingle­location installation: Trying outan information system at one site andusing the experience to decide if and howthe new system should be deployedthroughout the organization.nAlso known as location or pilot installation.24Chapter 15
Phased InstallationnPhased Installation: changing from theold information system to the new oneincrementally, starting with one or a fewfunctional components and then graduallyextending the installation to cover thewhole new system.25Chapter 15
26Chapter 15Planning InstallationnConsiderations¤Data conversion.nError correction.nLoading from current system.¤Planned system shutdown.¤Business cycle of organization.
Documenting the SystemnSystem documentation: detailedinformation about a system’s designspecifications, its internal workings, and itsfunctionality.nUser documentation: written or othervisual information about an applicationsystem, how it works, and how to use it.27Chapter 15
Documenting the System (Cont.)nInternal documentation: systemdocumentation that is part of the programsource code or is generated at compiletime.nExternal documentation: systemdocumentation that includes the outcomeof structured diagramming techniquessuch as data flow and E­R diagrams.28Chapter 15
Preparing User DocumentationnTraditional source has been informationsystems department.nApplication­oriented documentation is nowoften supplied by vendors and usersthemselves.29Chapter 15
Training and Supporting UsersnSupport: providing ongoing educationaland problem­solving assistance toinformation system users.nFor in­house developed systems, supportmaterials and jobs will have to beprepared or designed as part of theimplementation process.30Chapter 15
Training and Supporting Users(Cont.)nComputing infrastructure: all of theresources and practices required to helppeople and adequately use computersystems to do their primary work.31Chapter 15
32Chapter 15Training Information SystemsUsersnPotential training topics¤Use of the system.¤General computer concepts.¤Information system concepts.¤Organizational concepts.¤System management.¤System installation.
Training Information SystemsUsers (Cont.)nElectronic performance support system(EPSS): component of a software packageor an application in which training andeducational information is embedded.

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