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|  MIL-D-89009
APPENDIX
DATA ORGANIZATION
10.
SCOPE
10.1 Scope. This appendix is a mandatory part of the
specification. The information contained herein is intended for
compliance.
20.
APPLICABLE DOCUMENTS
This section is not applicable to this appendix.
30. DATA DICTIONARY
The data dictionary contains a description of all feature
tables in a coverage for all the DCW and BROWSE libraries. The
feature tables and primitive tables are stored as files in their
respective coverage directories. The DCW and BROWSE data
dictionaries are discussed in the remainder of this section.
30.1 Data dictionary contents. The DCW and BROWSE data
dictionaries presented in this appendix contain the name and
description of each attribute, attribute values, and explanatory
notes for each feature table. The DCW uses a product-specific
attribute coding system that is composed of TYPE and STATUS
designators for area, line, and point features; and LEVEL and
SYMBOL designators for text features. The TYPE attribute
specifies what the feature is, while the STATUS attribute
specifies the current condition of the feature. Some features
require both a TYPE and STATUS code to uniquely identify their
characteristics. For clarity, a matrix table defining the legal
attribute code combinations within a feature class is provided
when necessary. In order to uniquely identify each geographic
attribute in the DCW, the TYPE and STATUS attribute code names are
preceded by the two letter coverage abbreviation and a two letter
abbreviation for the type of graphic primitive present. Where
possible, ONC symbolization codes (from Appendix I - Symbolization
of the Product Specification for Operation Navigation Chart) are
mapped to DCW attribute values. Section 70 contains a cross-
reference table between the DCW TYPE and STATUS codes and FACC
(Feature/Attribute Coding Catalog) and FACS (Feature/Attribute
Coding System) codes. TABLE 60 identifies all feature tables and
primitive tables within a coverage for the DCW libraries. Feature
and primitive tables for the BROWSE library are presented in
Section 30.4.
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