Database repairing and consistent query answering /
| Main Author: | |
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| Format: | eBook |
| Language: | English |
| Published: |
[San Rafael, Calif.] :
Morgan & Claypool Publishers,
[2011]
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| Series: | Synthesis lectures on data management ;
#20. |
| Subjects: | |
| Online Access: | Connect to the full text of this electronic book Connect to the full text of this electronic book |
| Abstract: | Integrity constraints are semantic conditions that a database should satisfy in order to be an appropriate model of external reality. In practice, and for many reasons, a database may not satisfy those integrity constraints, and for that reason it is said to be inconsistent. However, and most likely a large portion of the database is still semantically correct, in a sense that has to be made precise. After having provided a formal characterization of consistent data in an inconsistent database, the natural problem emerges of extracting that semantically correct data, as query answers. |
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| Item Description: | Electronic resource. |
| Physical Description: | 1 online resource (xiv, 105 pages) : illustrations |
| Bibliography: | Includes bibliographical references (pages 93-103). |
| ISBN: | 9781608457632 (electronic bk.) 160845763X (electronic bk.) |
| ISSN: | 2153-5426 ; |