MIS 3305: Chapter 17 – Flashcards
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legacy system
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an old system that is fast approaching or beyond the end of its useful life within an organization
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conversion
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the process of transferring information from a legacy system to a new system
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software customization
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modifies software to meet specific user or business requirements
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off-the-shelf application software
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supports general business processes and does not require any specific software customization to meet the organization's need
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system development life cylce (SDLC)
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overall process for developing information systems from planning and analysis through implementation and maintenance
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planning phase
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involves establishing a high-level plan of the intended project and determined project goals
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change agent
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person or event that is the catalyst for implementing major changes for system to meet business changes
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brainstorming
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a technique for generating ideas by encouraging participants to offer as many ideas as possible in a short period of time without any analysis until all the ideas have been exhausted
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project
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a temporary endeavor undertaken to create a unique product or service
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project management
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the application of knowledge, skills, tools, and techniques to project activates in order to meet or exceed stakeholder needs and expectations from a project
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project manager
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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 are completed on time
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project scope
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defines the work that must be completed to deliver a product with the specified features and functions
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project plan
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a formal, approved document that mangers and controls project execution
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analysis phase
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analyzing end-user business requirements and refining project goals into defined functions and operations of the intended
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business requirements
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the detailed set of business requests that the system must meet in order to be sucessful
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requirements management
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the process of managing changes to the business requirements throughout the project
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requirements definition document
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contains the final set of business requirements prioritized in order of business importance
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sign-off
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the system users' actual signatures indicating they approve all of the business requirments
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process modeling
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involves graphically representing the processes that capture, manipulate, store, and distribute information between a system and its environment
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data flow diagram (DFD)
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illustrates the movement of information between external entities and the processes and data stores within the system
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Computer-aided software engineering (CASE)
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software suites that automate systems analysis, design, and development
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graphical user interface (GUI)
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the interface to an information system
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development phase
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involves taking all of the detailed design documents from the design phase and transforming them into the actual system
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software engineering
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a disciplined approach for constructing information systems through the use of common methods, techniques, or tools
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control objects for information and related technology (COBIT)
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a set of best practices that helps an organization to maximize the benefits of an information system, while at the same time establishing appropriate controls to ensure minimum errors
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scripting language
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a programming method that provides for interactive modules to a websites
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object-oriented languages
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languages that group data and corresponding processes into objectives
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fourth-generation languages (4GL)
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programming languages that look similar to human langauages
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testing phase
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involves bringing all the project pieces together into a special testing environment to test for errors, bugs, and interoperability and verify that the system meets all of the business requirements defined in the analysis phase
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bugs
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defects in the code of information system
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test conditions
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the detailed steps the system must perform along with expected results of each step
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implementation phase
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involves placing the system into production so users can begin to perform actual business operations with system
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user documentation
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highlights how to use the system
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online training
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runs over the internet of off a CD-RDM
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workshop training
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set in a classroom-type environment and led by an instructor
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help desk
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a group of people who respond to internal system user questions
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maintenance phase
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involves performing charges, corrections, additions, and upgrades to ensure the system continues to meet the business goals
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corrective maintenance
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makes the system changes to repair design flaws, coding errors, or implementation issues
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preventive maintenance
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makes system changes to reduce the chance of the future system failure
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Alpha testing
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access if the entire system meets the design requirements of the user
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development tests
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test the system to ensure that its bug free
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intefration testing
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vertify that separate systems can work together passing data back and forth correctly
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system testing
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verify that units or peices of code function correctly when integrated
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user acceptance testing
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determine the user and business requirements
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unit testing
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test individual units or pieces of code for a system
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parallel implementation
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uses both the legacy system and new system until all users verify the new system functions correctly
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plunge implementation
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discards the legacy system and immediately migrates all users to the new system
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pilot implementation
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assigns a small group of people to use the new system until it is verified that it works correctly
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phased implementation
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installs the new system in phases until it works correctly
