Extended Query Answering Using Integrity Rules

Autor:	Jerome Robinson, Barry G. T. Lowden
Rok vydání:	2000
Předmět:	Metadata Semantic query Information retrieval Computer science View Data integrity InformationSystems_DATABASEMANAGEMENT Tuple Query optimization Formal methods
Zdroj:	Lecture Notes in Computer Science ISBN: 9783540410942 ISMIS
Popis:	The conventional use of databases is commonly restricted to the retrieval of factual data in the form of tuples or records. However most databases also contain metadata in the form of integrity rules which can provide a rich source of additional information not normally available to the user. Integrity rules define what data values and relationships may exist within the database and so their interrogation can provide answers as to whether a certain database state is possible. Our paper describes how this may be achieved and specifies a formal approach to implementing such an enquiry system.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d6da157e9cd854a5127d6bc7c6c22f02 https://doi.org/10.1007/3-540-39963-1_27 Zobrazit plný text záznamu