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Data Modeling for Digital NOTAM System

Data Modeling for Digital NOTAM System. Science for representing a real world concept into a form that can be interpreted by an information system Data Model describes the structure of the data within a given domain (aeronautical data)

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Data Modeling for Digital NOTAM System

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  1. Data Modeling forDigital NOTAM System

  2. Science for representing a real world concept into a form that can be interpreted by an information system Data Model describes the structure of the data within a given domain (aeronautical data) Provides basis for formal contracts between interoperable systems Data driven application Eliminate free-form text Enables computer interpretation Foundation for interacting with multiple systems – messaging Enables providing data in multiple views Data Modeling – Why?

  3. AIXM: Information Model Provides globally applicable conceptual model and exchange format for aeronautical information Models temporality Accommodates ICAO standards and recommendations: Annex 4 and 15 Accommodates industry requirements: ARINC 424/EUROCAE ED-99/RTCA DO-272 Others… Uses XML and GML Is modular and extendable • AIXM 5 • Model for aeronautical information • www.aixm.aero

  4. AIXM: Information Model • AIXM provides international standardization • Content model: UML class definitions for features, attributes, data types, associations & business rules • Exchange format: XML/GML encoding • The AIXM evolution has demonstrated its capacity to adapt to increasingly demanding requirements • ISO 19100 • GML • Extensibility

  5. Data Model Requirements • Enable digitizing NOTAMs • AIXM 5 based • Globally applicable • Application schema supporting NOTAM processing applications • Simplify mapping data for electronic distribution • Temporality Model • Support permanent and temporary changes • Allow features to have life-span • Flexible • Data content separate from product specification • Allows consolidation and elimination of stovepipe systems

  6. Temporality Illustration

  7. transactions Concept of Transactions • Data model designed to capture changes as transactions • Flexibility in identifying specific change • All transactions have a life-span • Start of Life and End of Life • State of the system at a given moment of time (snapshot)obtained by combining all the effective and relevant transactions • Design allows supporting multiple products requiring same data structure – Extensible! • Flexibility to provide answers from both product and feature perspective • Product example: • Find NOTAM Related Change:NOTAMRUNWAY • Feature example • State of RUNWAY @ Time1: RUNWAY transactions

  8. AIXM Conceptual Model - Runway AIXM 5 RC1

  9. NOTAM Transaction Data AIRPORT RUNWAY RUNWAY TRANS - Transaction Id - Airport Id - Runway Id - Runway Id - NOTAM Number - Designator - Length - Designator - Start Date / Time - Name - Status - Airport Id - End Date / Time . . . . - City Served - Transaction Id . . . . . . . . . . . . . . . . Feature Transactions Identification Data 1 1..N 1..N 1

  10. RUNWAY RUNWAY TRANS - Runway Id - Runway Id - Status - Designator - Geometry - Airport Id - Transaction Id . . . . . . . . . . . . Runway NOTAM ExampleStatus Change 18R/36L CLSD WEF 0610101500-0610101700 Geo- Referencing Graphically show the change

  11. RUNWAY TRANS - Runway Id - Status - Geometry TIMESHEET - Transaction Id - Time Reference . . . . - Day - Day Till - Start Time . . . . Runway NOTAM ExampleStatus Change w/ Time 10L/28R CLSD 0900-1600 DLY WEF 0610110900-0610131600

  12. RUNWAY CENTER LINE POINT RUNWAYDECLARED DISTANCE - Role - Type - Geometry - Distance - Runway Direction - Runway Direction . . . . . . . . Runway NOTAM ExampleThreshold Displacement 23 THR DSPLCD 590 LDA 5010 WEF 0703291500 Auto-Calculated! Graphically show the change

  13. RUNWAY CENTER LINE POINT RUNWAYDECLARED DISTANCE - Role - Type - Geometry - Distance - Runway Direction - Runway Direction . . . . . . . . Runway NOTAM ExamplePartial Closure 26 W 2000 CLSD 1300-0200 WKDAYS WEF 0704091300 ? 13/31 NW 600 CLSD Auto-Calculated! Graphically show the change Ensures Consistency

  14. USAGE LIMITATION USAGE CONDITION - Limitation Id - Condition Id - Usage Limitation - Prior Permission - Timesheet Id - Limitation Id . . . . . . . . . . . . . . . . FLIGHT CHARACTERISTICS AIRCRAFT CHARACTERISTICS - Type - Type - Rule - Engine - Status - Max Wingspan - Military - Max Weight . . . . . . . . . . . . . . . . Runway NOTAM Example Limitations & Restrictions 18/36 CLSD JET 6/24 CLSD EXC 1 HR PPR 203−627−3001

  15. Data Content For Demonstration Permanent (Baseline) Data (National Airspace System Resource) = Temporary Update AIXM Based Data Model Integrates Permanent & Temporary Data

  16. Summary • Designed with fully temporality model • Permanent and temporary changes to aeronautical data • Cooperation with EUROCONTROL and Global Communities means US Digital NOTAM solution will be consistent worldwide. AIXM “BASELINE” Data COS Airport AIXM “TEMPORARY DELTA” Data

  17. Questions & Discussion

  18. Backup Slides

  19. 1 2 3 3 2 1 UML UML Implementation: Logical to Physical AIXM 5 Logical Model AIXM 5 Data Model CASE Tools AIM Database Implementation Changes Generate XMI (XML Metadata Interchange) file to be read by CASE Tools Generate relational database objects using CASE Tools

  20. NOTAM AI TRANSACTIONS - Transaction Id - Transaction Id - NOTAM Number - Type - Start Date / Time - Create Date - End Date / Time - Create User . . . . . . . . Transactions - Illustration NOTAM Metadata 0..1 1 Products

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