Results 1 - 10 of 324

Relational Languages for Metadata Integration

by Catharine M. Wyss, Edward L. Robertson - ACM Trans. Database Syst
"... In this article, we develop a relational algebra for metadata integration, Federated Interoperable Relational Algebra (FIRA). FIRA has many desirable properties such as compositionality, closure, a deterministic semantics, a modest complexity, support for nested queries, a subalgebra equivalent to c ..."
Abstract - Cited by 24 (5 self) - Add to MetaCart
In this article, we develop a relational algebra for metadata integration, Federated Interoperable Relational Algebra (FIRA). FIRA has many desirable properties such as compositionality, closure, a deterministic semantics, a modest complexity, support for nested queries, a subalgebra equivalent

Self-determination and persistence in a real-life setting: Toward a motivational model of high school dropout.

by Robert J Vallerand , Michelle S Fbrtier , Frederic Guay - Journal of Personality and Social Psychology, , 1997
"... The purpose of this study was to propose and test a motivational model of high school dropout. The model posits that teachers, parents, and the school administration's behaviors toward students influence students' perceptions of competence and autonomy. The less autonomy supportive the so ..."
Abstract - Cited by 183 (19 self) - Add to MetaCart
strongly supported the motivational model of high school dropout. We also tested the model separately for boys and girls. Results The purpose of this study was to propose a model that integrates existing knowledge on the determinants and consequences of intrinsic and extrinsic motivation and to test

Intrinsic Support for Metadata Integration in Relational Federations

by Catharine M. Wyss, James J. Lu, Shun Yan Cheung, Mehdi M. Akhavein
"... Abstract. This paper investigates the idea of supporting metadata querying and restructuring using extensions of the SQL:1999 facilities for integrity constraints and active databases. Our approach involves associating meta-functionality with federation relations by means of constraints, assertions, ..."
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Abstract. This paper investigates the idea of supporting metadata querying and restructuring using extensions of the SQL:1999 facilities for integrity constraints and active databases. Our approach involves associating meta-functionality with federation relations by means of constraints, assertions

An integrated overview of metadata in ATLAS

by E J Gallas, D Malon, R J Hawkings, S Albr, E Torrence
"... Abstract. Metadata–data about data–arise in many contexts, from many diverse sources, and at many levels in ATLAS. Familiar examples include run-level, luminosity-block-level, and event-level metadata, and, related to processing and organization, dataset-level and file-level metadata, but these cate ..."
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in ATLAS, and describes ongoing work to deliver integrated metadata services in support of physics analysis. 1.

SQL Support over MongoDB using Metadata

by Sanobar Khan, Prof. Vanita Mane
"... Abstract- New requirements are arising in environments where we have higher volumes of data with high operation rates, agile development and cloud computing. In recent years, a growing number of companies have adopted various types of nonrelational database, commonly referred to as NoSQL database. T ..."
Abstract - Cited by 2 (0 self) - Add to MetaCart
on one of the boosting technology of NoSQL database i.e. MongoDB, and makes a comparison with MySQL and thus justifies why MongoDB is preferred over MySQL. Lastly, a method is proposed to integrate these two types of database by adding a middleware (Metadata) between application layer and database layer.

Knowledge and Metadata Integration for Warehousing Complex Data

by Jean-christian Ralaivao - In 6th International Conference on Information Systems Technology and its Applications , 2007
"... Abstract: With the ever-growing availability of so-called complex data, especially on the Web, decision-support systems such as data warehouses must store and pro-cess data that are not only numerical or symbolic. Warehousing and analyzing such data requires the joint exploitation of metadata and do ..."
Abstract - Cited by 1 (0 self) - Add to MetaCart
and domain-related knowledge, which must thereby be integrated. In this paper, we survey the types of knowledge and meta-data that are needed for managing complex data, discuss the issue of knowledge and metadata integration, and propose a CWM-compliant integration solution that we in-corporate into an XML

INTEGRATING METADATA WITH SURVEY DEVELOPMENT IN A CAI

by Michael Colledge, Fred Wensing, Eden Brinkley
"... Metadata management is increasingly recognized as a vital component of the statistical process. This paper discusses the integration of metadata in the survey development process with reference to two major and related re-engineering initiatives at the Australian Bureau of Statistics (ABS). The firs ..."
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Metadata management is increasingly recognized as a vital component of the statistical process. This paper discusses the integration of metadata in the survey development process with reference to two major and related re-engineering initiatives at the Australian Bureau of Statistics (ABS

Information Integration through Reasoning on Meta-data

by Attila Fokt
"... SILK is an Enterprise Information Integration (EII) system using knowledge representation and reasoning techniques to support both me-diation and integration of heterogeneous in-formation sources. The SILK system is built around a Model Warehouse which stores mod-els of single information sources, a ..."
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SILK is an Enterprise Information Integration (EII) system using knowledge representation and reasoning techniques to support both me-diation and integration of heterogeneous in-formation sources. The SILK system is built around a Model Warehouse which stores mod-els of single information sources

Structuring Business Metadata in Data Warehouse Systems for Effective Business Support

by N. L. Sarda - In cs.DB/0110052 . arXiv Archieve. URL: http://arXiv.org , 2001
"... Large organizations today are being served by different types of data processing and informations systems, ranging from the operational (OLTP) systems, data warehouse systems, to data mining and business intelligence applications. It is important to create an integrated repository of what these syst ..."
Abstract - Cited by 6 (0 self) - Add to MetaCart
. In this paper, we study the issue of structuring business metadata so that it can provide a context for business management and decision support when integrated with data warehousing. We define temporal object-oriented business metadata model, and relate it both to the technical metadata and the data warehouse

GRID METADATA LIFETIME CONTROL IN ACTON

by Wei Xing , Rizos Sakellariou , Oscar Corcho , Carole Goble , Marios D Dikaiakos
"... Abstract In the Semantic Grid, metadata, as first class citizens, should be maintained upto-date in a cost-effective manner. This includes maximising the automation of different aspects of the metadata lifecycle, managing the evolution and change of metadata in distributed contexts, and synchronisi ..."
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, and synchronising adequately the evolution of all these related entities. In this paper, we introduce a semantic model and its operations which is designed for supporting dynamic metadata management in Active Ontology (ActOn), a semantic information integration approach for highly dynamic information sources
Results 1 - 10 of 324