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Digital Initiatives: Metadata

GDMS (General Descriptive Modeling Scheme)

Metadata Home > GDMS

Introduction
Examples
DTD


Introduction

The General Descriptive Modeling Scheme (GDMS) is a project to create a formal information structure that can be used to construct descriptive models of real-world or imaginary phenomena to create contexts for collections of digital resources. The underlying data structure is provided by an XML DTD, which allows the model to be as hierarchical or as flat, as is appropriate, and provides ways to cross reference data within or among models. Some examples of applications of the GDMS are descriptions of collections that have a complex structure (such as a set of architectural images or a set of resources related to an archeological site), annotated bibliographies of digital resources, virtual exhibitions and descriptions of historic or artistic events.

The content of a model begins with a single division or div element which can contain any number of div elements, recursively. A division description or divdesc can be included to give some meaning to the div; it contains a set of general descriptive metadata fields, each of which is optional and repeatable, that can be used in a wide variety of ways to make the div element a meaningful context for groups of resources. Each resource is included within a res element which also includes a set of Dublin core tags to describe the resource. For more details about the use of the tag set see "Usage".

The project aims to create a tool set that includes the DTD itself, and software that allows XML instances to be created, edited, searched and rendered for display using XSL stylesheets. The tool set is built around a general XML editor that allows a user to create and edit a single GDMS instance. A variety of other modules are planned that provide a way to more efficiently process and include different kinds of digital resources and to make it easy to manipulate a model for particular uses. All software developed for the project will be made freely available when it is ready.


Examples

A Virtual Exhibition

This example shows one way to mark up a virtual exhibition of the works of a particular painter. The exhibition, on the website of the Smithsonian American Art Museum, is a series of HTML pages that describe the works of Abbott Handerson Thayer. It consists of two sections, an introduction that has 3 short essays and a "Paintings" section that contains four thematic collections of paintings, each of which has an introductory essay.

The Smithsonian Online Exhibition
The UVa GDMS Representation

 

DTD

Note: GDMS is currently under development by the Metadata Steering Group at the University of Virginia Library. The element set and the DTD are still considered in-progress. The DTD will be released as version 1.0 when development and prototyping are complete.

Current version

Version 0.92 (Last updated 04/19/2002)

DTD Documentation (note: the documentation is NOT up to date with the current DTD. Please use with caution.)

 

 

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