ITM 102 Chapter Notes - Chapter 10: Change Control, Offshore Outsourcing, Gantt Chart
28 Jun 2018
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ITM Chapter 10
IS development problems often lead to high-profile disasters
Consequences of system success and failure
Increase/decrease in revenue, repair/damage to brand reputation,
prevent/incur liabilities, increase/decrease productivity
Global information systems must support a diverse base of customers, users,
products, languages, currencies, laws, etc.
Most important Global IS development issues is the global standardization of data
definitions
Common data definitions are necessary for sharing data among the parts of
an international business
Systems development life cycle (SDLC) - the overall process for developing
information systems from planning and analysis through implementation and
maintenance
Begins with a business need, then an assessment of the function a system
must have to satisfy the need, ends with the benefits of the system no longer
outweigh its maintenance costs
Life Cycle
1. Planning phase - establishing a high level plan of the intended project and
determining project goals. Most critical phase
2. Analysis phase - analyzing end-user business requirements and refining
projects goals into defined functions and operations of the intended system.
oBusiness requirements - the detailed set of business requests that
the system must meet to be successful
3. Design phase- describing the desired features and operations of the system
4. Development phase - taking all of the detailed design documents from the
design phase and transforming them into the actual system
5. Testing phase - bringing all the project pieces together into a special testing
environment to test for errors, bugs and interoperability, to verify that the
system meets all the business requirements
6. Implementation phase - placing the system into production so users can
begin to perform actual business operations with the system
7. Maintenance phase - preforming changes, corrections, additions, and
upgrades to ensure that the system continues to meet the business goals
Methodology - set of policies, procedures, standards, processes, practices, tools,
techniques and tasks that people apply to technical and management challenges
Waterfall methodology - a sequential, activity-based process in which each phase
in the SDLC is performed sequentially from planning through implementation and
maintenance (not used very often anymore) is inflexible, expensive
find more resources at oneclass.com
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Document Summary
Is development problems often lead to high-profile disasters. Increase/decrease in revenue, repair/damage to brand reputation, prevent/incur liabilities, increase/decrease productivity. Global information systems must support a diverse base of customers, users, products, languages, currencies, laws, etc. Most important global is development issues is the global standardization of data definitions. Common data definitions are necessary for sharing data among the parts of an international business. Systems development life cycle (sdlc) - the overall process for developing information systems from planning and analysis through implementation and maintenance. Begins with a business need, then an assessment of the function a system must have to satisfy the need, ends with the benefits of the system no longer outweigh its maintenance costs. Life cycle: planning phase - establishing a high level plan of the intended project and determining project goals. Implementation phase - placing the system into production so users can begin to perform actual business operations with the system.
