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I have concluded from reading, studying, and personal modeling experience that there are seven (7) basic properties of systems. I enumerate these properties in the order shown, because a modeller can then evaluate them in order as a systematic approach to systems analysis. This holistic approach makes up a logical systems analysis algorithm that can be used for conceptual modeling or extended to more formal and detailed models.
1. boundaries (of the system)
2. elements (components of the system)
3. attributes (of the elements)
4. transformations (within the elements)
5. relationships (between and among the elements)
6. inputs (from outside the system)
7. outputs (from the system to its environment)
Note that the first letters of the terms make up a plausible school or team cheer -- BEAT RIO
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