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Stages of Information System

Stages of Information System
Planning Phase
Consists of a set of activities:
Analysis Phase
The analysis phase begins after the project team selects a development
methodology, draws up the Project Development Plan, and receives
permission to proceed from management. The goal of the analysis phase
is to produce a list of requirements for a new or revised information
system.
Design Phase
The project team must figure out how the new system will
fulfill the requirements specified in the System
Requirements Report. There are a list of activities for the
Design Phase:
1. Identify potential solutions
They might be more effective, less costly, or less complex. Therefore, it is
not a good idea to proceed with the first solution that comes to mind.
The project team should instead identify several potential hardware and
software solutions by brainstorming and researching case studies at web
sites and in computer publications.
Implementation Phase
The project team supervises the tasks necessary to construct the new
information system. There are a set of tasks that take place during this
phase:
Maintenance Phase
Involves day-to-day operation of the system, making modifications to
improve performance, and correcting problems. After an information
system is implemented, it remains in operation for a period of time. During
this time, maintenance activities ensure that the system functions as
well as possible. There are a list of activities for this phase:
2. Evaluate
solutions and select the best.
3. Select hardware and
software.
4. Develop application specifications.
5. Obtain
approval to implement the new system.
1. Assemble
the project.
2. Justify project.
3. Choose
development methodology.
4. Develop a
project schedule.
5. Produce a project
development plan.
1. Operate
equipment.
2. Make backups.
3. Provide help to users.
4. Fix bugs.
5. Optimize for speed and security.
6. Revise software as necessary to
meet business needs.
1. Purchase and install hardware and/or software.
2. Create
applications.
3. Test applications.
4. Finalize documentation.
5. Train users.
6. Convert data.
7. Convert to new system.
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