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Mapa Mental
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Gladys Mba
, criado
more than 1 year ago
A level, A2 IT (Chapter 5) Mapa Mental sobre 5d- Changeover and Installation, criado por Gladys Mba em 27-01-2017.
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Criado por
Gladys Mba
aproximadamente 8 anos atrás
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7468835
mind_map
2017-05-03T09:15:53Z
5d- Changeover
and Installation
Direct (Plunge)
Parallel
Phased
Pilot
Old system runs until it is time
for new system to be used
Old system immediately stopped
and new system installed straight
after
Everyone starts using new
system at the same time
Data from old system
transferred to new
Date set for new
system to go
live
Old system continues to run as
new system is being installed
For a period of time both
systems are run in parallel
X- At this time data has to
be entered into both
systems in order for them
to be up-to-date.
Old system retired once there is
confidence in new system
Part of the new system are
introduced one at a time
As one module is introduced in the
new system, it's corresponding
module in the old system is
stopped.
X- The two systems have
to be very compatible and
have to share data easily.
Can be combined with parallel
for each module
A group is an organisation are exposed to
the system before others in the organisation
Any problem with system or installation is
identified and fix before full lance of system
Can be combined which
phased and plot
O- Group used in pilot can help other
when training using cascading waterfall
model
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7468835
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2017-05-03T09:15:53Z
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