MIL-STD-2407

Abstract

The vector product format (VPF) is a standard format, structure, and organization for large geographic databases that are based on a georelational data model and are intended for direct use. VPF is designed to be compatible with a wide variety of applications and products. VPF allows application software to read data directly from computer-readable media without prior conversion to an intermediate form. VPF uses tables and indexes that permit direct access by spatial location and thematic content and is designed to be used with any digital geographic data in vector format that can be represented using nodes, edges, and faces. VPF defines the format of data objects, and the georelational data model provides a data organization within which software can manipulate the VPF data objects. A product specification corresponding to a specific database product determines the precise contents of feature tables and their relationships in the database. In this context, each separate product or application is defined by a product specification and implemented by using VPF structures. <br>The information contained in this standard shall be used by the Military Departments, Office of the Secretary of Defense, Organizations of the Joint Chiefs of Staff and the Defense Agencies of the Department of Defense (collectively known as DoD Components) in preparing and accessing digital geographic data required or specified to be in vector product format. <br>This appendix provides information and discussion concerning tiling for a VPF database. The information contained in this standard shall be used by the Military Departments, Office of the Secretary of Defense, Organizations of the Joint Chiefs of Staff and the Defense Agencies of the Department of Defense (collectively known as DoD Components) in preparing and accessing digital geographic data required or specified to be in vector product format. <br>This appendix provides information, discussion, and examples concerning data quality issues in a VPF database. The information contained in this standard shall be used by the Military Departments, Office of the Secretary of Defense, organizations of the Joint Chiefs of Staff and the Defense Agencies of the Department of Defense (collectively known as DoD Components) in preparing and accessing digital geographic data required or specified to be in vector product format. <br>This appendix provides information and discussion concerning spatial indexes in a VPF database. The information contained in this standard shall be used by the Military Departments, Office of the Secretary of Defense, Organizations of the Joint Chiefs of Staff and the Defense Agencies of the Department of Defense (collectively known as DoD Components) in preparing and accessing digital geographic data required or specified to be in vector product format. <br>The following codes are used in the VPF metadata tables found at the library and database levels. In particular, these coding schemes must be used in the geographic reference table (<a>TABLE 37</a>) to ensure the proper interpretation of the coordinate system in a VPF library. <b><u>Intended Use:</u></b> This standard is designed to define the methods and provide guidance for creating and using digital geographic databases in vector product format. <br>