Titel: Relational and XML Data Exchange (Synthesis Lectures on Data Management)
Verlag: Springer
Erscheinungsjahr: 2010
Sprache: Englisch
ISBN-10: 3031007123
ISBN-13: 9783031007125
Einband: Softcover
Zustand: New

�ber diesen Titel

Inhaltsangabe

Data exchange is the problem of finding an instance of a target schema, given an instance of a source schema and a specification of the relationship between the source and the target. Such a target instance should correctly represent information from the source instance under the constraints imposed by the target schema, and it should allow one to evaluate queries on the target instance in a way that is semantically consistent with the source data. Data exchange is an old problem that re-emerged as an active research topic recently, due to the increased need for exchange of data in various formats, often in e-business applications. In this lecture, we give an overview of the basic concepts of data exchange in both relational and XML contexts. We give examples of data exchange problems, and we introduce the main tasks that need to addressed. We then discuss relational data exchange, concentrating on issues such as relational schema mappings, materializing target instances (including canonical solutions and cores), query answering, and query rewriting. After that, we discuss metadata management, i.e., handling schema mappings themselves. We pay particular attention to operations on schema mappings, such as composition and inverse. Finally, we describe both data exchange and metadata management in the context of XML. We use mappings based on transforming tree patterns, and we show that they lead to a host of new problems that did not arise in the relational case, but they need to be addressed for XML. These include consistency issues for mappings and schemas, as well as imposing tighter restrictions on mappings and queries to achieve tractable query answering in data exchange. Table of Contents: Overview / Relational Mappings and Data Exchange / Metadata Management / XML Mappings and Data Exchange

��ber diesen Titel� kann sich auf eine andere Ausgabe dieses Titels beziehen.

Anbieterinformationen

I mainly carry imported books from South East Asia / South Asia for readers of all Age Groups.

Zur Homepage des Verk�ufers

Unternehmensdaten des Verk�ufers

PLETOS INC
6931 51st Avenue, WOODSIDE, Woodside, NY, 11377, U.S.A.

Gesch�ftsbedingungen und Versandinformationen

Verkaufsbedingungen

We accept return for those books which are received damamged. Though we take appropriate care in packaing to avoid such situation.

Widerrufsbelehrung

Versandbedingungen

Versandkosten von USA nach Deutschland

Versandkosten von USA nach Deutschland
Bestellmenge	21 bis 36�Werktage	5 bis 8�Werktage
Erster Artikel	EUR 7.69	EUR 12.39

Die Versandzeiten werden von den Verk�uferinnen und Verk�ufern festgelegt. Sie variieren je nach Versanddienstleister und Standort. Sendungen, die den Zoll passieren, k�nnen Verz�gerungen unterliegen. Eventuell anfallende Abgaben oder Geb�hren sind von der K�uferin bzw. dem K�ufer zu tragen. Die Verk�uferin bzw. der Verk�ufer kann Sie bez�glich zus�tzlicher Versandkosten kontaktieren, um einen m�glichen Anstieg der Versandkosten f�r Ihre Artikel auszugleichen.