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9 Cards in this Set
- Front
- Back
components
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Aggregation of parts that make up a larger "object". These parts are irreducible, and can not be broken down any further
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Interrelations
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The function of one component ties it to the function of others within the system. Each component is working toward some purpose but a common one
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Boundary
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What separates a system from it's environment, in which the system lies within the boundary. The boundary establishes the limits of a system, separating it from other systems.
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Purpose
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Overall goal or function of a system. In structured system design, one rule is high cohesion: any system you cannot describe in a single phrase is actually more than one function
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Environment
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Anything outside the system boundary that influences the system. The environment is made up of important components that are out of our control.
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Interfaces
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Points at which the system meets its environment. Interfaces also exists between subsystems that eliminate outside access to private info and also control points of entry.
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Constraints
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limits to what a system can do as a result of external rules and relates or internal decisions. Some constraints are imposed inside the system, others are imposed by the environment
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Input
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a system takes input from its environment in order to function. This starts the cascade of a system
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Outputs
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what a system returns to its environment as a result of achieving its purpose. In information systems, you have inputs, processing and outputs of info resources. Outputs are the data or info result of the processing.
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