Coverart for item
The Resource Relational and XML data exchange, Marcelo Arenas ... [et al.], (electronic book)

Relational and XML data exchange, Marcelo Arenas ... [et al.], (electronic book)

Label
Relational and XML data exchange
Title
Relational and XML data exchange
Statement of responsibility
Marcelo Arenas ... [et al.]
Contributor
Subject
Language
eng
Summary
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
Member of
Cataloging source
CaBNvSL
Illustrations
illustrations
Index
no index present
Literary form
non fiction
Nature of contents
  • dictionaries
  • abstracts summaries
  • bibliography
http://library.link/vocab/relatedWorkOrContributorName
Arenas, Marcelo.
Series statement
  • Synthesis digital library of engineering and computer science.
  • Synthesis lectures on data management
Series volume
8.
http://library.link/vocab/subjectName
  • Electronic data interchange
  • Data structures (Computer science)
  • XML (Document markup language)
  • Relational databases
Target audience
  • adult
  • specialized
Label
Relational and XML data exchange, Marcelo Arenas ... [et al.], (electronic book)
Instantiates
Publication
Bibliography note
Includes bibliographical references (p. 97-101)
Color
multicolored
Contents
  • 1. Overview -- A data exchange example -- XML data exchange -- Overview of the main tasks in data exchange -- Key definitions -- Background -- Bibliographic comments
  • 2. Relational mappings and data exchange -- Relational databases: key definitions -- Relational schemas and constraints -- Instances, constants, and nulls -- Relational schema mappings -- Materializing target instances -- Existence of solutions -- Universal solutions -- Materializing universal solutions -- Cores -- Query answering -- Answering first-order and conjunctive queries -- Query rewriting -- Summary -- Bibliographical comments --
  • 3. Metadata management -- Introduction -- Composition of schema mappings -- Extending st-tgds with second-order quantification -- Inverting schema mapping -- A first definition of inverse -- Bringing exchanged data back: the recovery of a schema mapping -- Computing the inverse operator -- Summary -- Bibliographic comments --
  • 4. XML mappings and data exchange -- XML databases -- XML documents and DTDs -- Expressing properties of trees -- XML schema mappings -- Static analysis of XML schema mappings -- Consistency -- Absolute consistency -- Exchange with XML schema mappings -- Data exchange problem -- Hardness of query answering -- Tractable query answering -- Summary -- Bibliographic comments --
  • Bibliography -- Authors' biographies
Dimensions
unknown
Extent
1 electronic text (viii, 104 p. : ill.)
File format
multiple file formats
Form of item
electronic
Isbn
9781608454112
Issn
2153-5426
Other physical details
digital file.
Reformatting quality
access
Specific material designation
remote
System details
System requirements: Adobe Acrobat Reader
Label
Relational and XML data exchange, Marcelo Arenas ... [et al.], (electronic book)
Publication
Bibliography note
Includes bibliographical references (p. 97-101)
Color
multicolored
Contents
  • 1. Overview -- A data exchange example -- XML data exchange -- Overview of the main tasks in data exchange -- Key definitions -- Background -- Bibliographic comments
  • 2. Relational mappings and data exchange -- Relational databases: key definitions -- Relational schemas and constraints -- Instances, constants, and nulls -- Relational schema mappings -- Materializing target instances -- Existence of solutions -- Universal solutions -- Materializing universal solutions -- Cores -- Query answering -- Answering first-order and conjunctive queries -- Query rewriting -- Summary -- Bibliographical comments --
  • 3. Metadata management -- Introduction -- Composition of schema mappings -- Extending st-tgds with second-order quantification -- Inverting schema mapping -- A first definition of inverse -- Bringing exchanged data back: the recovery of a schema mapping -- Computing the inverse operator -- Summary -- Bibliographic comments --
  • 4. XML mappings and data exchange -- XML databases -- XML documents and DTDs -- Expressing properties of trees -- XML schema mappings -- Static analysis of XML schema mappings -- Consistency -- Absolute consistency -- Exchange with XML schema mappings -- Data exchange problem -- Hardness of query answering -- Tractable query answering -- Summary -- Bibliographic comments --
  • Bibliography -- Authors' biographies
Dimensions
unknown
Extent
1 electronic text (viii, 104 p. : ill.)
File format
multiple file formats
Form of item
electronic
Isbn
9781608454112
Issn
2153-5426
Other physical details
digital file.
Reformatting quality
access
Specific material designation
remote
System details
System requirements: Adobe Acrobat Reader

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