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Future Internet 2010, 2(2), 156-189; doi:10.3390/fi2020156

Article

A Distributed Infrastructure for Metadata about Metadata: The HDMM Architectural Style and PORTAL-DOORS System

Carl Taswell

Global TeleGenetics, Inc., 8 Gilly Flower Street, Ladera Ranch, CA 92694, USA

Received: 30 December 2009; in revised form: 12 April 2010 / Accepted: 20 May 2010 / Published: 1 June 2010

(This article belongs to the Special Issue Metadata and Markup)

Download PDF Full-Text [684 KB, uploaded 1 June 2010 16:41 CEST]

Abstract: Both the IRIS-DNS System and the PORTAL-DOORS System share a common architectural style for pervasive metadata networks that operate as distributed metadata management systems with hierarchical authorities for entity registering and attribute publishing. Hierarchical control of metadata redistribution throughout the registry-directory networks constitutes an essential characteristic of this architectural style called Hierarchically Distributed Mobile Metadata (HDMM) with its focus on moving the metadata for who what where as fast as possible from servers in response to requests from clients. The novel concept of multilevel metadata about metadata has also been defined for the PORTAL-DOORS System with the use of entity, record, infoset, representation and message metadata. Other new features implemented include the use of aliases, priorities and metaresources.

Keywords: architectural style; mobile metadata; hierarchical authority; distributed registrydirectory system; IRIS-DNS System; PORTAL-DOORS System; PDS; HDMM

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