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Introduction to the AIXM Conceptual Model |
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What is the AIXM Conceptual Model? |
The AIXM Conceptual Model is the component of the AIXM data standard that provides a conceptual model of aeronautical data.
It models the important features, properties (attributes and associations) and business rules that make up aeronautical information. As such, it can be used as the basis for the design of an AIM database.
The model is designed using the Unified Modelling Language (UML).
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Read more on UML |
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The AIXM Conceptual Model covers a number of conceptual areas, for example:
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Aerodrome/Heliport data |
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Airspace boundaries |
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En-route structures |
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Read more on the conceptual areas |
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Each conceptual area contains the definitions of features, attributes and associations (relationships). The small UML diagram below highlights these items.
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Features describe important aeronautical entities. They are modelled as classes in UML. They include, for example:
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runways |
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aerodromes |
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routes |
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procedures |
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Attributes are used to characterise the feature. For example:
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A runway has a width and a length
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An aerodrome may have name and an ICAO location indicator |
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Relationships describe how features are related. For example:
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A runway is situated at an aerodrome
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A runway has runway lighting |
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Finally, the model includes rules and plausibility checks on the data. The degree to which these rules are enforced remains a decision of each implementation. For example:
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Each runway should be within 25 nm of the aerodrome reference point (data plausibility check)
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Any new 5-letter waypoint identifier shall be unique world-wide (mandatory rule) |
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Last validation: 28/11/2006
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