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Page Title:
Table 35. Content and format for Tile Reference (TILEREF) feature class schema table. |
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|  MIL-D-89009
TABLE 34.
Content and format for Library Reference (LIBREF)
feature class schema table.
{Header length};\
Library reference Feature Class Schema Table;-;\
ID=I,
1,N,Row Identifier,-,-,:\
FEATURE_CLASS=T, 8,P,Name of Feature Class,-,-,:\
TABLE1=T,
12,P,First Table,-,-,:\
FOREIGN_KEY=T,
16,P,Column Name in First Table,-,-,:\
TABLE2=T,
12,P,Second Table,-,-,:\
PRIMARY_KEY=T,
16,P,Column Name in Second Table,-,-,:;
1
LIBREF
LIBREF.LFT
ID
EDG
ID
2
LIBREF
EDG
ID
LIBREF.LFT
ID
TABLE 35.
Content and format for Tile Reference (TILEREF)
feature class schema table.
{Header length};\
Tile reference Feature Class Schema Table;-;\
ID=I,
1,N,Row Identifier,-,-,:\
FEATURE_CLASS=T, 8,P,Name of Feature Class,-,-,:\
TABLE1=T,
12,P,First Table,-,-,:\
FOREIGN_KEY=T,
16,P,Column Name in First Table,-,-,:\
TABLE2=T,
12,P,Second Table,-,-,:\
PRIMARY_KEY=T,
16,P,Column Name in Second Table,-,-,:;
1
TILEREF
TILEREF.AFT
ID
FAC
ID
2
TILEREF
FAC
ID
TILEREF.AFT
ID
b. Feature tables. The feature tables implemented at the
coverage level are point, line, area, and text. All
feature tables have the same structure and contain a row
identifier column and one or more attribute columns.
The number of attribute columns in each feature table is
a function of the number of attributes associated with
the feature class.
Each point, line, and area feature table has a narrative
table (*.DOC) associated with it describing data quality
characteristics that vary at this level of the database.
Any feature table that has variable-length records will
also require a separate variable-length index file.
These indices are contained within files having one of
four suffixes: PFX (Point Feature index), LFX (Line
Feature index), AFX (Area Feature index), and TFX (Text
Feature index).
37
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