\CDB\MModel\: Top-Level CDB Structure Description

83 © 2015 Open Geospatial Consortium Materials, for a description of the CDB materials. A listing of the CDB Base Materials can be found in Appendix L. The base material names found in appendix L must be used when the “Materials.xml” file is not found in the metadata directory. Refer to section 5.1.3 Base Material Table for a description of the materials definition file. 4. “Defaults” Definitions Metadata file: This file contains the default values for each of the CDB datasets. Refer to Chapter 5, CDB Datasets, for a description of the CDB datasets. Appendix S lists the various default values as documented throughout this Specification. Defaults values found in appendix S must be used if the “Defaults.xml” file is not found in the metadata directory. Refer to section 5.1.4 Default Values Definition Metadata for a description of the defaults definition file. 5. “Specification_Version” Metadata file deprecated 6. “Version” Metadata file: This metadata file is mandatory and identifies the content of one CDB Version. The concept is described in section 3.2.1, CDB Version; the content of the file is defined in section 5.1.6, Version Metadata. 7. “CDB_Attributes” Metadata file: This file is used to describe all the CDB attributes that are supported by the CDB Specification. A complete listing and description of CDB attributes is provided in section 5.7.1.3, CDB Attributes of this Specification. The file is described in section 5.1.7 CDB Attributes Metadata. 8. “Geomatics_Attributes” Metadata file: This file is used to describe all Geomatics attributes that may be referenced by this CDB refer to section 5.7.1.2.6.2, Geomatics Attributes for a description of Geomatics attributes. Note that the usage of Geomatics attribution falls outside of the jurisdiction of the CDB Specification. Nonetheless, the CDB Specification provides a standardized mechanism to allow users to fully describe each of the Geomatics attributes they wish to insert within the CDB repository structure. The file is described in section 5.1.8, Geomatics Attributes Metadata. 9. “Vendor_Attributes” Metadata file: This file is used to describe all Vendor attributes that may be referenced by this CDB refer to section 5.7.1.2.6.3, Vendor Attributes for a description of Vendor attributes. Note that the usage of Vendor attribution falls outside of the jurisdiction of the CDB Specification. Nonetheless, the CDB Specification provides a standardized mechanism to allow users to fully describe each of the Vendor attributes they wish to insert within the CDB repository structure. The file is described in section 5.1.9, Vendor Attributes Metadata. 10. Client-specific Metadata files: These files are limited to “Lights_xxx.xml” Definitions Metadata files and offer a complementary approach to modifying the appearance of lights for