The change to the minimal metadata requirements
| Title | Change Proposal | Justification | Status | Notes | |
|---|---|---|---|---|---|
| 1 | Update definition | Update Definitions page to include the different types of data sets. This can be a note in the ICAO data set entry. A data set outlined in ICAO Annex 15. Note: The different forms of ICAO data sets are listed in ICAO Annex 15 5.3.1.1: a) AIP data set; | The obstacle data set has different requirements from the others so needs to be defined on its own. | Open | The different metadata requirements can be found at Basic properties for obstacles. |
| 2 | Change wording of DS-META-007 - Geographical extent of the data set on Metadata Requirements | Reword the requirement into two clauses: Each ICAO obstacle data set shall be provided together with metadata giving the geographical extent of the data set. Each ICAO data set, other than obstacle data sets, should be provided together with metadata giving the geographical extent of the data set. The new wording will be reflected on Requirement 7_ Geographical extent of the data set. The tables on that page will be updated. In particular the Obligation / Condition row should become: Mandatory for obstacle data sets. Optional for other ICAO data sets. If provided the following is required:
| The obstacle data set makes "Area of coverage" mandatory. The tidy up of the table will ensure it is inline with the requirement/recommendation. | Open | |
| 3 | New requirement for obstacle data sets covering integrity. | Add definition to Definitions:
Data integrity (assurance level). A degree of assurance that an aeronautical data and its value has not been lost or altered since the origination or authorized amendment. (ICAO Annex 15)
Add new requirement to Minimal Metadata Requirements: Each ICAO obstacle data set shall be provided together with metadata giving the data integrity assurance level of the data set. Add dedicated page with guidance. tbd Update Appendix B_ Complete Informative Example to reflect the guidance. | See Basic properties for obstacles. | Open | Are the levels:
What figure is expected in the metadata e.g.
See work are below for examples... |
| 4 | Rename Requirement 7_ Geographical extent of the data set, etc. | The page name should be updated to e.g. DS-META-007 - Geographical extent of the data set. This change should be applied to all the individual requirements pages. | The word "requirement" can be misleading. It is better simply to use the identifier. | Open | |
| 5 | Update Appendix A_ Requirements Analysis to reflect final version of Annex 15 and PANS-AIM | Check the paragraph numbers used. Add the obstacle data set metadata requirements. Updated numbers should be reflected on Minimal Metadata Requirements as well. | Mostly tidy up. | Open | |
| 6 | Update trace for Requirement 7_ Geographical extent of the data set on the Metadata Requirements page. | The requirement is traceable to PANS-AIM Table A6-2. Obstacle attributes for the obstacle data sets | The obstacle data set makes "Area of coverage" mandatory. | Open |
Work area - notes to process
ED-98C/DO-276C:
Integrity
Definition: Integrity of data is the degree of assurance that the data and its value have not been lost nor altered since the data origination or authorized amendment.
Data Capture Rule: The integrity of the data set shall be expressed, indicating the probability of any single data element having been changed inadvertently since the creation of the data set [OBST-R034].
NOTE: For more information on integrity, refer to EUROCAE ED-76A / RTCA DO-200B.
ED-119C/DO-291C:
Integrity of data in the aeronautical data processing chain from data origination process to present data manipulation process.
Encoding: expressed in terms of probability of data loss or alteration (0=perfect, 1=all lost).
Example: essential ICAO Annex 15 0.0001=10e-5.
Also: AMDB section of ED-119C/DO-291C mentions integrity as an extension to ISO 19115. Do we want to do that? It uses ISO's extension mechanism.
<amdb:dataIntegrity>0.00000001</amdb:dataIntegrity>