Concept
An external entity is a component outside a system that interacts with the system, often serving as a source or destination of data. It is crucial in defining system boundaries and understanding how the system interfaces with the outside world.
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Concept
A system boundary defines the limits of a system, distinguishing what is inside the system from what is outside, and determining the interactions and exchanges with the environment. It is crucial for understanding, analyzing, and modeling systems as it helps identify relevant components, processes, and influences that need to be considered or excluded.
Concept
A Data Flow Diagram (DFD) is a graphical representation used to visualize the flow of data within a system, highlighting the processes, data stores, and external entities involved. It is a valuable tool for understanding system functionality and identifying potential areas for improvement in system design and data management.
Concept
An interface is a shared boundary across which two separate components of a computer system exchange information. It defines the methods and properties that a class must implement, enabling different software components to communicate effectively without needing to know the internal workings of each other.
Concept
Input/Output (I/O) refers to the communication between an information processing system, such as a computer, and the external world, which could be a human or another information processing system. It encompasses all the methods and devices used to transfer data to and from a computer, playing a crucial role in the functionality and usability of computing systems.
Concept
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Concept
Interaction is the reciprocal action or influence between entities, which can be individuals, systems, or environments. It is fundamental to understanding complex systems and behaviors, as it shapes the dynamics and outcomes of relationships and processes.
Concept
System architecture is the conceptual model that defines the structure, behavior, and more views of a system, crucial for ensuring that the system's components work together seamlessly. It serves as a blueprint for both the system and the project developing it, facilitating communication among stakeholders and guiding the design and development process.
Concept
A Logical Data Flow Diagram (DFD) focuses on the business and how the business operates, illustrating the flow of data through a system without detailing the technical implementation. It is used to visualize processes, data storage, and data flow in a system, highlighting the inputs, outputs, and interactions between different entities and processes.
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