The structure of the table is shown in Table 67 and the indexes in Table 68.
Key Field name Data type Size/Format Description
. Fluid Text 21 Flight unique identifier
. Sources Text 20 The name of the source application, this record was imported from ('AMOC', 'ETMS', ’BACK’,...)
Departure Text 1 Qualifier for departure assessment
EnRoute Text 1 Qualifier for cruise assessment
Arrival Text 1 Qualifier for arrival assessment
No. NAME FIELDS PROPERTIES
1 Fluid Fluid Ascending
2 PrimaryKey Fluid Ascending
Sources Ascending
Table 68: TrajectoryAssessment indexes.
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Following the next steps, each flight independently of its source will be either deleted because of its inconsistency, either saved as it is, either merged with another flight in order to avoid duplicated flights in the final merged database.
These steps will be executed iteratively:
3.1. Prepare data for merging
3.1.1. Gain access to importing tools tables
Data that must be merged are saved in the importing tools tables. These tables must be linked to the current tool, in order to have access to imported flight data.
3.1.2. Merge AMOC and ETMS traffic tables
3.1.2.1. Clear MergedTraffic table for a new merging process
As a final state, data saved in traffic table will contain flights belonging only to one day. When a new set of flights for one day arrives, tables must be cleaned, not because not deleting will affect data in some unwanted way, but just for a faster data processing. The following code for clearing MergedTraffic table is used:
'--------------------------------------------------------------------------------
DoCmd.DeleteObject acTable, "MergedTraffic"
DoCmd.TransferDatabase acImport, "Microsoft Access", CurrentDb.Name, acTable, "MergedTraffic", "Model_MergedTraffic", True
DoCmd.DeleteObject acTable, "Inconsistent_MergedTraffic"
DoCmd.TransferDatabase acImport, "Microsoft Access", CurrentDb.Name, acTable, "Inconsistent_MergedTraffic", "ModelInconsistent_MergedTraffic", True
DoCmd.DeleteObject acTable, "TrajectoryAssessment"
DoCmd.TransferDatabase acImport, "Microsoft Access", CurrentDb.Name, acTable, "TrajectoryAssessment", "Model_TrajectoryAssessment", True
'--------------------------------------------------------------------------------
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