DAFIF file

The Digital Aeronautical Flight Information File (or DAFIF) is a set of files that contain data on airports, navaids, waypoints, special use airspace and other facts relevant to flying in the entire world. This data is provided by the US military, through the National Geospatial Intelligence Agency (NGA).

data source

(JViews Diagrammer) A container of data supported by JViews Diagrammer, such that all or part of the data can be loaded into the Designer and used in a diagram. Examples of data sources are a Microsoft® Access® database, a CSV (comma-separated values) file, an XML file in diagram format.

(JViews Maps) The preferred way to connect your application to georeferenced data sets. A map data source connects a feature iterator, a renderer, and a map layer. Specific map data sources are dedicated to specific types of map format.

datum

A set of base reference points for measuring locations on the Earth's surface to define a geographic coordinate system.

datum conversion

Geodetic datums (or “horizontal datums”) help in the process of approximation of the earth’s surface by providing a translation and an optional rotation adjustment of an ellipsoid relative to an arbitrary center of the earth.

declaration

(CSS) The elements of the right side of a style rule. The declaration set is enclosed within curly brackets. Each declaration is a property-value pair. Each property-value pair ends with a semi-colon. A property-value pair sets a rendering projection on a graphic object that represents a model object.

DEM format

Digital Elevation Model file format.

DIGEST ASRP and USRP

These images are used primarily by international defense and military agencies. ArcGIS® support automatically georeferences DIGEST images, and there are two profiles for data in DIGEST-ARC Standard Raster Product (ASRP), produced by the United Kingdom Military Survey, and Universal Polar Stereographic (UPS)/UTM Standard Raster Product (USRP), produced by the French Defense Mapping Agency.

DTED format

Digital Terrain Elevation Data (DTED®). A map format for terrain elevations published by the U.S. National Imagery and Mapping Agency (NIMA).

DXF format

AutoCAD DXF™ (Drawing Interchange Format, or Drawing Exchange Format) is a CAD data file format, developed by Autodesk® as their solution for enabling data interoperability between AutoCAD and other programs.