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Concept | Meaning |
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Environment entity | Entities which a system will interact with |
Causal entity | Entities whose properties include predictable causal relationships among its shared phenomena |
Autonomous entity | Entities which can receive or send message autonomously usually consist of people |
Symbolic entity | Entities which are a physical representation of data |
Attribute | A named variable for characterizing a static property of an entity |
Static attribute | Characterize the static properties of the environment entity |
Dynamic attribute | Characterize the dynamic properties of the environment entity |
Value | Intangible individual entity that exists outside time and space, and is not subject to change |
Tree-like hierarchical state machine | A hierarchical state graph for characterizing dynamic properties of a causal entity |
Finite state machine | A directed state graph for characterizing a dynamic property |
Divide | Relation between the basic state machine and a state |
State | Value of an entity at a given time |
Transition | A state change in a state machine represent the relation between two states |
Message | The content that is sent or received from one environment entity to another |
Command message | Containing the action command |
Data message | Message that has no command contains only the parameters |
Interaction | Observable shared phenomenon between a system and its environment entity |
Message interaction | Interaction that occurs through the messaging |
Value interaction | Interaction that occurs through reading or assigning the value of the static attribute |
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