Excerpt from Where Does the Data Come From: Managing Data Integration With Source Tagging Capabilities Abstract Many important Management Support Systems require access to and seamless integration of multiple heterogeneous database systems. This paper studies heterogeneous database systems from the source perspective. It aims at addressing issues such as the following. (1) Where is the data from? (2) Which intermediate sources were used to arrive at that data? Specifically, it presents a polygen model for resolving these ...
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Excerpt from Where Does the Data Come From: Managing Data Integration With Source Tagging Capabilities Abstract Many important Management Support Systems require access to and seamless integration of multiple heterogeneous database systems. This paper studies heterogeneous database systems from the source perspective. It aims at addressing issues such as the following. (1) Where is the data from? (2) Which intermediate sources were used to arrive at that data? Specifically, it presents a polygen model for resolving these data source and intermediate source problems. The polygen model provides a precise characterization of the source tagging problem and a solution including a polygen algebra, a data - driven query translation mechanism, and the necessary and sufficient condition for source tagging. This model has been developed as a direct extension of the relational model to the multiple database setting with source tagging capabilities, thus it enjoys all of the strengths of the traditional relational model. Source knowledge is important for many reasons. It enables users to apply their own judgment to the credibility of the information. It enables users to rationalize and reconcile data inconsistencies. It enables system designers to develop access charge systems. It enables an application user to adjust data. And it enables a system to interpret data semantics more accurately. In sum, source tagging capabilities should be a required functionality for future heterogeneous database systems. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at ... This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
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Fine. Sewn binding. Cloth over boards. 40 p. In Stock. 100% Money Back Guarantee. Brand New, Perfect Condition, allow 4-14 business days for standard shipping. To Alaska, Hawaii, U.S. protectorate, P.O. box, and APO/FPO addresses allow 4-28 business days for Standard shipping. No expedited shipping. All orders placed with expedited shipping will be cancelled. Over 3, 000, 000 happy customers.
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