Foundations of Data Exchange

Foundations of Data Exchange

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The problem of exchanging data between different databases with different schemas is an area of immense importance. Consequently data exchange has been one of the most active research topics in databases over the past decade. Foundational questions related to data exchange largely revolve around three key problems: how to build target solutions; how to answer queries over target solutions; and how to manipulate schema mappings themselves? The last question is also known under the name 'metadata management', since mappings represent metadata, rather than data in the database. In this book the authors summarize the key developments of a decade of research. Part I introduces the problem of data exchange via examples, both relational and XML; Part II deals with exchanging relational data; Part III focuses on exchanging XML data; and Part IV covers metadata more

Product details

  • Electronic book text
  • Cambridge University Press (Virtual Publishing)
  • Cambridge, United Kingdom
  • English
  • 26 b/w illus. 90 exercises
  • 1139060155
  • 9781139060158

Table of contents

Preface; Part I. Getting Started: 1. Data exchange by example; 2. Theoretical background; 3. Data exchange: key definitions; Part II. Relational Data Exchange: 4. The problem of relational data exchange; 5. Existence of solutions; 6. Good solutions; 7. Query answering and rewriting; 8. Alternative semantics; 9. End notes to Part II; Part III. XML Data Exchange: 10. The problem of XML data exchange; 11. Patterns and mappings; 12. Building solutions; 13. Answering tuple queries; 14. XML-to-XML queries; 15. XML data exchange via relations; 16. End notes to Part III; Part IV. Metadata Management: 17. What is metadata management?; 18. Consistency of schema mappings; 19. Mapping composition; 20. Inverting schema mappings; 21. Structural characterizations of schema mapping; 22. End notes to Part IV; References; more