Marcelo Arenas, Pablo Barceló, Leonid Libkin, Filip MurlakCambridge University Press, 3/6/2014EAN 9781107016163, ISBN10: 1107016169Hardcover, 341 pages, 24.7 x 17.4 x 2.2 cmLanguage: EnglishThe 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 management.PrefacePart I. Getting Started1. Data exchange by example2. Theoretical background3. Data exchangekey definitionsPart II. Relational Data Exchange4. The problem of relational data exchange5. Existence of solutions6. Good solutions7. Query answering and rewriting8. Alternative semantics9. End notes to Part IIPart III. XML Data Exchange10. The problem of XML data exchange11. Patterns and mappings12. Building solutions13. Answering tuple queries14. XML-to-XML queries15. XML data exchange via relations16. End notes to Part IIIPart IV. Metadata Management17. What is metadata management?18. Consistency of schema mappings19. Mapping composition20. Inverting schema mappings21. Structural characterizations of schema mapping22. End notes to Part IVReferencesIndex.
