planning, system installation Flashcards
what are the 4 purposes of a new system
- increase productivity
- increase quality of the output
- minimize costs
- reduce the errors of the existing system
list 6 potential organizational issues
- lack of guiding organizational , business strategies
- lack of stakeholder participation
- lack of end-user ‘ownership’ of system
- lack of attention to required training
- lack of attention to organizational issues (eg. organizational culture)
- lack of attention to design of tasks, jobs
what is a feasibility report
it decides whether the proposed project should be pursued / implemented by evaluating and analyzing the project on its potential
list the name of the 5 criteria the feasibility report evaluates on
technical
economical
legal
operational
scheduling
what does the technical feasibility deal with
whether the existing technology is sufficient to implement the new system
what does the economical feasibility deal with
whether the new system is cost effective
what does the legal feasibility deal with
whether there are any conflicts between the new system and any regulations or laws
what does the operational feasibility deal with
whether the existing organizational procedures are sufficient to support the operation of the new system
what does the scheduling feasibility deal with
how long it takes to implement the new system
what is change management
- involves various parameters
- process of shifting individuals, teams, departments, organizations from the current state to the desired state
what is a legacy system
- old technology
- some systems that belong to this ‘old technology’ category still play an important role in the organization
- its data cannot be converted to newer formats or else its application cannot be upgraded
what does the administration need to pay special attention to for legacy system
exchange of data between legacy and new systems
what is a business merger
combining two or more business entities
what are the four strategies for integrations (business merging)
- keeping both information systems, developing them to have the same functionality
- replacing both information systems with a new one
- selecting the best information systems from each company and combining them
- selecting one company’s information system and dropping the other
what is software incompatibility
where different systems cannot operate on the same computer or on computers linked by network
for what type of system is a locally hosted system most appropriate for
larger, complex systems
for what type of system is a remote hosted system most appropriate for
no hardware equipment in place
what outsource responsibilities does the company that look for remote hosted systems want
maintenance
support
backups
security
what does SaaS stand for
Software as a service
what is SaaS (Software as a service)
delivery method
allows software and data to be hosted, managed centrally on a remote data center
how do users access SaaS
they pay on a subscription basis
what does a SaaS solution need to be accessed
web browser
broadband internet connection
where do SaaS solutions reside
cloud
give three advantages of SaaS
less expensive as it has low initial cost, only requires few investments in installation
scalable solution - company only has to adjust its monthly subscription
safe - data resides in the cloud service
give three disadvantages of SaaS
if SaaS provider goes out of business, data may be lost
performance is low
integration with other SaaS is difficult
what is changeover method
process of putting the new system online, retiring the old one
why would an organization choose one implementation method over one other
they need to decide based on cost , risk
what are the two implementation methods
conversion, changeover
what are the four types of changeover methods
parallel
big bang / direct
pilot
phased
summarize parallel changeover method
both systems work in parallel for a period of time
outputs of both systems are compared to ensure that the new system is functioning properly
when the company is satisfied with the output of the new system, the old system is terminated
what is the advantage of parallel changeover method
limited risk
what is a disadvantage of parallel changeover method
extra cost, workload as two different systems are running simultaneously
summarize Big Bang changeover method
new system is plugged in and the old system is unplugged at the same time
what is the disadvantage of Big Bang changeover method
very risky, dangerous, all users need to be trained before
summarize the pilot changeover method
- mostly used in large organizations that have multiple sites
- new system is introduced in one of the sites and is extended to other sites
- once it is proved successful, it is implemented to the rest of the company site using an another changeover method
what is a advantage of the pilot changeover method
risk is low
summarize phased changeover method
one module of the system is converted at a time
different parts the system are converted at different times
what is a disadvantage of phased changeover method
adoption of new system takes longer so training period is extended
what is data migration
transfer of data between different formats / storage types / computer systems
when does data migration happen
when organization changes / upgrades / merges its information systems
how does data migration achieve efficient use of Human Resources
works automatically
how does data migration happen (4 steps)
- extracts data from source system
- transforms data for target system
- loads data onto target system
- validates data loads
what are 3 problems that may arise during data migration
- incapability of moving information due to incompatibility with the new system
- data loss / incomplete data transfer or errors in the process
- misinterpretation of data due to incompatibilities
