Accession Number:

AD1107413

Title:

Analyzing and Revising Mediated Schemas to Improve Their Matchability

Descriptive Note:

Technical Report

Corporate Author:

MITRE CORP MCLEAN VA MCLEAN

Report Date:

2005-01-01

Pagination or Media Count:

12.0

Abstract:

Data integration systems often provide a uniform interface, called a mediated schema, to a multitude of disparate data sources. To answer user queries posed over the mediated schema, such systems employ a set of semantic matches be-tween this schema and the local schemas of the data sources. Finding such matches is well known to be difficult. Hence much work has focused on developing semi-automatic techniques to efficiently find the matches. In this paper, how-ever, we consider the complementary problem of improving the mediated schema, to make finding such matches easier. Specifically, a mediated schema S will typically be matched with many source schemas. Thus, can the developer of S analyze and revise S in a way that preserves Ss semantics, and yet makes it easier to match with in the future

Subject Categories:

  • Information Science

Distribution Statement:

APPROVED FOR PUBLIC RELEASE