Corporation For National Research Initiatives DOIs and the Handle System 5 August 1998 Larry Lannom CNRI

Corporation For National Research Initiatives Naming Resources on the Net The Problem Internet chapter1.pdf

Corporation For National Research Initiatives Naming Resources on the Net The Solution Internet Naming Service Name = Value(s) /xyz =

Corporation For National Research Initiatives Naming Resources on the Net The Solution Internet Naming Service Name = Value(s) /xyz =

Corporation For National Research Initiatives CNRI Handle System u Distributed and Scalable u Enforces unique names u Enables association of one or more typed values, e.g., URL, with each name u Optimized for speed and reliability u Provides infrastructure for application domains, e.g., digital libraries, electronic publishing….

Corporation For National Research Initiatives DOIs and the Handle System u DOIs are an application of the Handle System u The Handle System is a distributed computer system for naming digital objects and storing the names and the information that is needed to locate and access these items via the Internet.

Corporation For National Research Initiatives Digital Object Architecture Client Repository / Collections Resolution System Search Engines Metadata Databases Catalogues, Guide, etc. Resource Discovery

Corporation For National Research Initiatives Handle System Initiatives u IDF (International DOI Foundation) u Library of Congress –National Digital Library Program –U.S. Copyright Office u NCSTRL (Networked Computer Science Technical Reports Library) u DTIC (Defense Technical Information Center) u USIA (U.S. Information Agency) u NMPA (National Music Publishers Association) u National Library of Medicine

Corporation For National Research Initiatives Handles Resolve to Typed Data Handle data loc.ndlp/amrlp URLhttp:// HandleData type RAPloc/repository URLhttp:// Extensible Data Types XYZ

Corporation For National Research Initiatives HS #n HS #n which may be replicated Handle Resolution Handle System GHS LHS is a collection of handle services each of which consists of one or more handle servers HS #1 HS #2 HS #3 HS #n loc.ndlp/amrlp URL Client

Corporation For National Research Initiatives Handle Clients Handle System GHS LHS GHS LHS Handle ResolutionHandle Administration

Corporation For National Research Initiatives Handle Clients Handle System GHS LHS GHS LHS Handle ResolutionHandle Administration HTTP Get Resolve Handle Handle Data HTTP Redirect Web Server Proxy

Corporation For National Research Initiatives Handle Clients Handle System GHS LHS GHS LHS Handle AdministrationHandle Resolution Handle Data Resolve Handle hdl: / Browser Extension

Corporation For National Research Initiatives Handle Clients Handle System GHS LHS GHS LHS Handle AdministrationHandle Resolution HTTP Handle Admin API Web Server Admin Forms

Corporation For National Research Initiatives Handle Clients Handle System GHS LHS GHS LHS Handle AdministrationHandle Resolution

Corporation For National Research Initiatives Handle Clients Handle System GHS LHS GHS LHS Handle Resolution Handle Administration embedded in another process

Corporation For National Research Initiatives Handle Clients Handle System GHS LHS GHS LHS Handle Administration embedded in another process Handle Resolution embedded in another process

Corporation For National Research Initiatives hdl:10.123/456 urn:hdl:10.123/456 Handle Record Client Representation urn:hdl:10.123/%E6%97%A5%E6%9C%AC hdl:10.123/%E6%97%A5%E6%9C%AC Handle Syntax and I18N /456URLhttp://pub.com/doc.html /URLhttp:/ietf.org/japan.html hdl:10.123/ (UTF-8 Encoding)