scispace - formally typeset
Search or ask a question
Topic

Metadata repository

About: Metadata repository is a research topic. Over the lifetime, 5841 publications have been published within this topic receiving 121778 citations.


Papers
More filters
Book
14 Apr 2014
TL;DR: This book introduces the problem of data exchange via examples, both relational and XML; Part II deals with exchanging relational data; Part III focuses on exchanging XML data; and Part IV covers metadata management.
Abstract: The problem of exchanging data between different databases with different schemas is an area of immense importance. Consequently data exchange has been one of the most active research topics in databases over the past decade. Foundational questions related to data exchange largely revolve around three key problems: how to build target solutions; how to answer queries over target solutions; and how to manipulate schema mappings themselves? The last question is also known under the name 'metadata management', since mappings represent metadata, rather than data in the database. In this book the authors summarize the key developments of a decade of research. Part I introduces the problem of data exchange via examples, both relational and XML; Part II deals with exchanging relational data; Part III focuses on exchanging XML data; and Part IV covers metadata management.

104 citations

Proceedings ArticleDOI
01 Apr 2001
TL;DR: A hybrid collaborative approach is described which combines the semantic knowledge of RDF Schemas with the explicit structural, cardinality and datatyping constraints provided by XMLschemas in a complementary manner to enhance interoperability between application profiles.
Abstract: The term "application profile" has recently become highly topical. Heery and Patel [1] define application profiles as metadata schemas which consist of metadata elements drawn from one or more namespaces, combined together by implementers and optimised for a particular local application. They state that the principal characteristics of an application profile are that: it may draw on one or more existing namespaces; does not introduce new metadata elements; it can specify permitted schemes and values; and it can refine standard metadata elements. Significant new initiatives such as TV-Anytime [2], MPEG-21 [3] and the Open Archives Initiative (OAI) [4] are demanding application profiles which combine elements from a number of different existing standardized metadata schemas whilst maintaining interoperability and satisfying their own specific requirements through refinements, extensions and additions. So far approaches to application profiles have been based on either RDF Schemas [5] or XML Schemas [6,7,8]. The SCHEMAS project [9] has adopted a purely RDF Schema approach. Justification for a pure XML Schema approach to application profiles is given in [10]. Despite high level assurances of unification from the W3C [11, 12], a purist and competitive attitude has prevailed amongst implementers. This has been because the demarcation of roles and the interface between these two disparate W3C Candidate Recommendations has been fuzzy; no low level details or implementations describing interface mechanisms have been provided; and implementers have been afraid of compromising interoperability. In this paper we describe a hybrid collaborative approach which combines the semantic knowledge of RDF Schemas with the explicit structural, cardinality and datatyping constraints provided by XML Schemas in a complementary manner. First we describe our view of how XML Schema and RDF Schema fit into the overall web metadata architecture. We then describe possible schema interface mechanisms. Finally using examples and mapping implementations based on XSLT and a metadata ontology, we demonstrate how interoperability between application profiles can be enhanced by using a dual schema approach.

103 citations

Patent
16 Apr 2007
TL;DR: In this article, a method of acquiring data associated with a television program consistent with certain embodiments involves acquiring information that identifies a currently playing television program; receiving a command from a user interface that selects an image forming a portion of a video displayed on the television, wherein said frame of video is a part of the television program.
Abstract: A method of acquiring data associated with a television program consistent with certain embodiments involves acquiring information that identifies a currently playing television program; receiving a command from a user interface that selects an image forming a portion of a frame of video displayed on the television, wherein said frame of video is a portion of the television program; accessing a specified web site that contains a database of metadata associated with television programs via the Internet; querying the specified web site for metadata associated with the image by providing the image along with the information that identifies the currently playing television program; receiving a response from the specified web site that provides metadata associated with the image; and displaying at least a portion of the metadata. This abstract is not to be considered limiting, since other embodiments may deviate from the features described in this abstract.

103 citations

Patent
17 Dec 2003
TL;DR: In this article, a system and method for providing metadata interaction and visualization with task-related objects is described, where a plurality of task-oriented items includes a storage component specifying metadata relating to at least one of planning, executing or completing a task.
Abstract: A system and method for providing metadata interaction and visualization with task-related objects is described. A plurality of task-oriented items is defined. Each task-oriented item includes a storage component specifying metadata relating to at least one of planning, executing or completing a task. A visualization is provided to tie in the task-oriented items and associate modeling logic operating on at least one such task-oriented item. The visualization is displayed by highlighting at least one of interdependencies and conflicts between the metadata of the task-oriented items.

103 citations

Patent
27 Jun 1997
TL;DR: In this article, the authors describe a repository which stores metadata relating to data stored in one or more databases, and the reuse criteria accessible to repository users are stored separate from repository program code at a non-programming level.
Abstract: The invention disclosed herein is implemented in a repository which stores metadata relating to data stored in one or more databases. The repository includes a repository database in which the metadata is stored, one or more scanners each of which scans at least one database and obtains metadata therefrom, and one or more loaders each of which loads metadata obtained by at least one scanner into the repository database in accordance with the externalized reuse criteria. According to the invention, metadata stored in the repository is reused, for example, not replaced by identical metadata when the repository is updated or populated, and the criteria governing reuse is externalized, i.e., accessible and modifiable by a repository user. The reuse criteria accessible to repository users is stored separate from repository program code at a non-programming level such that the customer (user) can change the reuse procedures without an experienced programmer.

102 citations


Network Information
Related Topics (5)
Information system
107.5K papers, 1.8M citations
85% related
User interface
85.4K papers, 1.7M citations
81% related
Software
130.5K papers, 2M citations
80% related
Mobile computing
51.3K papers, 1M citations
80% related
Support vector machine
73.6K papers, 1.7M citations
80% related
Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202332
202279
202113
202011
201921
201824