Metadata : Building Blocks of Digital Libraries. Descriptive Metadata: "data about data contents, for resource description and also for discovery Structural Metadata: "data about the containers of data", indicates the component parts, such as how pages are ordered to make chapters.
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Metadata: Building Blocks of Digital Libraries
1. rights management metadata, for intellectual property
2. preservation metadata, information needed to archive and preserve a resource
Metadata in the context of the digital library
Parallels traditional libraries - card catalogue followed by OPAC with MARC encoded records
Dublin Core (DC) – a popular metadata standard and simple concise method of description for electronic material
15 elements: Title, Creator, Subject, Description, Publisher, Contributor, Date, Type, Format, Identifier, Source, Language, Relation, Coverage, and Rights
all optional and repeatable
Dublin Core Format
greater flexibility for DL cataloger
“the ability of multiple systems with different hardware and software platforms, data structures, and interfaces to exchange data with minimal loss of content and functionality,” (NISO, Understanding Metadata, 2004).
Metadata Systems Architecture
1. Elements 2. Format 3 .Framework
4. Protocol - harvests (or collects) the metadatadescriptions in an archive so that services can be built using metadata from many archives i.e. OAI-PMH (Open Archives Initiative Protocol for Metadata Harvesting)
A Digital Library: Metadata in Application
American Shakespeare Festival Theatre DL