Digital Nautical Chart (DNC) - NGA

MIL-PRF-89023
TABLE 20. Environment feature class schema table (FCS)
ID FEATURE_CLASS TABLE1 TABLE1_KEY TABLE2 TABLE2_KEY
1 ENVAREA ENVAREA.AFT FAC_ID FAC ID
2 ENVAREA FAC ID ENVAREA.AFT FAC_ID
3 ENVAREA ENVAREA.AFT ID ENVAREA.NJT FEATURE_ID
4 ENVAREA ENVAREA.NJT RAT_ID NOTES.RAT ID
5 ENVAREA NOTES.RAT ID ENVAREA.NJT RAT_ID
6 ENVAREA ENVAREA.NJT FEATURE_ID ENVAREA.AFT ID
7 CURRDIAP CURRDIAP.PFT END_ID END ID
8 CURRDIAP END ID CURRDIAP.PFT END_ID
9 CURRDIAP CURRDIAP.PFT ID CURRDIAP.NJT FEATURE_ID
10 CURRDIAP CURRDIAP.NJT RAT_ID NOTES.RAT ID
11 CURRDIAP NOTES.RAT ID CURRDIAP.NJT RAT_ID
12 CURRDIAP CURRDIAP.NJT FEATURE_ID CURRDIAP.PFT ID
13 CURRFLP CURRFLP.PFT END_ID END ID
14 CURRFLP END ID CURRFLP.PFT END_ID
15 CURRFLP CURRFLP.PFT ID CURRFLP.NJT FEATURE_ID
16 CURRFLP CURRFLP.NJT RAT_ID NOTES.RAT ID
17 CURRFLP NOTES.RAT ID CURRFLP.NJT RAT_ID
18 CURRFLP CURRFLP.NJT FEATURE_ID CURRFLP.PFT ID
19 TIDEP TIDEP.PFT END_ID END ID
20 TIDEP END ID TIDEP.PFT END_ID
21 TIDEP TIDEP.PFT ID TIDEP.NJT FEATURE_ID
22 TIDEP TIDEP.NJT RAT_ID NOTES.RAT ID
23 TIDEP NOTES.RAT ID TIDEP.NJT RAT_ID
24 TIDEP TIDEP.NJT FEATURE_ID TIDEP.PFT ID
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