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39 Cards in this Set
- Front
- Back
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SoA Service Oriented Architecture
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treats every component of an IT system a database file a server a CRM software solution.
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Insourcing
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IT specialist inside your organization
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Self sourcing
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do it yourself approach many end users take with little or no help from IT specialists.
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Outsourcing
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A third party organization
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Systems development life cycle SDLC
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A structured step by step approach for developing information systems.
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Waterfall methodology
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Each phase of the SDLC is followed by another from planning, through implementation
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PHASE 1 Planning
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Create a solid plan for developing your information system
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Critical success Factor (CSF) |
A factor simply critical to your organizations success
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Project scope |
Clearly defines the high level system requirements
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Scope creep |
Occurs when the scope of the project increases
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Feature creep |
Occurs when developers add extra features that were not part of the original/initial requirements.
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Project scope document |
A written definition of the project scope and is usually no longer than a paragraph
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Project Plan |
defines the what when and who questions of system development
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Project manager |
An individual who is an expert in project planning and management defines and develops the project plan and tracks the plan to ensure all key project milestones and completed on time.
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Project milestones |
Represents key dates for which you need a certain group of activities performed.
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PHASE 2 Analysis
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Involves end users and IT specialists working together to gather understand and document the business requirements for the proposed system
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Business requirements |
the detailed set of knowledge worker requests that the system must meet in order to be successful. Address the why and what of your development activities.
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Joint application development (JAD) |
Knowledge workers and IT specialists meet, sometimes for several days to define or review the business requirements for the system.
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Requirements definition document |
prioritizes the business requirements and places them in a formal comprehensive document.
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PHASE 3 DESIGN
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Build a technical blue print of how the proposed system will work
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Technical architecture
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defines the hardware software and telecommunications equipment required to run the system
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Design system Models
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Includes GUI screens that users will interface with database designs, report formats software steps etcetera
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PHASE 4 Development
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take all of your detailed design documents from the design phase and transform them into an actual system.
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Build the technical architecture
Build the database and programs |
Mostly performed by IT specialists
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PHASE 2 Testing
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verifies that the system works and meets all of the business requirements defined in the analysis phase.
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Write the test conditions
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the detailed steps the system must perform along with the expected results of each step.
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Unit testing |
tests individual units of code.
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System testing |
verifies that the units of code function correctly when integrated
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Integration testing |
verifies that separate systems work together
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User acceptance testing (UAT) |
determines if the system satisfies the business requirements.
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PHASE 6 Implementation
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distribute the system to all of the knowledge workers and they begin using the system to perform their everyday jobs
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Write detailed User documentation
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highlights how to use the system.
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Provide online training for the system users
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Online training runs over the internet or off a CD ROM
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Workshop training
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Is held in a classroom environment and lead by an instructor
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Parallel implementation method
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Use both the old and new system simultaneously
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Plunge implementation method
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discard the old system completely and use the new
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Pilot implementation method
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Start with small groups of people on the new system and gradually add more users.
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PHASE 7 Maintenance
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Monitor and support the new system to ensure it continues to meet the business goals
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Help desk to support the system users
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A group of people who responds to knowledge workers questions.
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