6533b851fe1ef96bd12a8bd0

RESEARCH PRODUCT

Grammars++ for modelling information in text

Frank Wm. TompaAiri Salminen

subject

Computer scienceViewmedia_common.quotation_subjectComputerApplications_COMPUTERSINOTHERSYSTEMScomputer.software_genreQuery languageDatabase designAdaptive grammarRule-based machine translationmedia_commonGrammarProgramming languagebusiness.industryDatabase schemaPredicate (grammar)TheoryofComputation_MATHEMATICALLOGICANDFORMALLANGUAGESExtended Affix GrammarHardware and ArchitectureAffix grammarStochastic context-free grammarSynchronous context-free grammarArtificial intelligenceL-attributed grammarbusinesscomputerSoftwareNatural language processingInformation Systems

description

Abstract Grammars provide a convenient means to describe the set of valid instances in a text database. Flexibility in choosing a grammar can be exploited to provide information modelling capability by designing productions in the grammar to represent entities and relationships of interest to database applications. Additional constraints can be specified by attaching predicates to selected nonterminals in the grammar. When used for database definition, grammars can provide the functionality that users have come to expect of database schemas. Extended grammars can also be used to specify database manipulation, including query, update, view definition, and index specification.

yearjournalcountryeditionlanguage
1999-03-01Information Systems
https://doi.org/10.1016/s0306-4379(99)00002-2