Tutorial Description
DESCRIPTION: The SEDRIS DRM allows one to describe and articulate one’s environmental data clearly, while at the same time using the same representation model to understand others’ data unambiguously. The DRM includes the logical relationships or associations between data classes. It also ensures the syntax and the structural semantics of the data are fully expressed and correctly understood by users. The combination of the DRM classes and their relationships provides a rich, powerful, and expressive schema that can be thought of as the grammar of a language for describing environmental data. This tutorial covers a complete introduction to the SEDRIS DRM. It includes: a review of the notation used; the DRM organization and usage; how the DRM utilizes the Environmental Data Coding Specification (EDCS) and the Spatial Reference Model (SRM); and a description of the key DRM classes such as metadata, libraries, topology, point-sampled and grid data, organizational schemes, attributes, features, and geometry.