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| Title | Need for information definitions | Identifier | SWIM-INFO-001 | Requirement | Exchanged information shall be documented in an information definition. | Rationale | The requirement for information definitions is essential in order to facilitate semantic interoperability. Without information definitions, there are no resources to allow the meaning of the information to be clearly defined, understood and harmonised between stakeholders. | Verification | Completeness | Examples/Notes | Example: Standardised information exchange models such as the Aeronautical Information Exchange Model (AIXM) [RD10], the Flight Information Exchange Model (FIXM) [RD 11], the Weather Information Exchange Model (WXXM) [RD 13] and the ICAO Meteorological Information Exchange Model (IWXXM) [RD 14]. Example: Descriptions of information exchanged by services. Example: Data catalogues used to list details on the exchanged information. Example: Information exchanges captured as part of a business process model. | Level of Implementation | Mandatory |
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They are agreed and published by a particular community of interest. There may be multiple versions of an exchange model e.g. IWXXM 1.1 was used by the SESAR programme but a v2.1 is now available and v3 is open for testing.
The examples exchange models listed above relate to three ICAO business domains (aeronautical, weather and flight information). However, other exchange models exist.
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