2000
Exploring Performance Issues for a Clinical Database Organized Using an Entity-Attribute-Value Representation
Chen R, Nadkarni P, Marenco L, Levin F, Erdos J, Miller P. Exploring Performance Issues for a Clinical Database Organized Using an Entity-Attribute-Value Representation. Journal Of The American Medical Informatics Association 2000, 7: 475-487. PMID: 10984467, PMCID: PMC79043, DOI: 10.1136/jamia.2000.0070475.Peer-Reviewed Original ResearchConceptsEAV/CRDatabase schemaSQL statementsDatabase modelDatabase sizeSystem memoryQuery execution timeHeterogeneous biomedical dataSimple SQL statementsQuery efficiencyQuery performancePowerful hardwareQuery strategyEntity attributesDatabase queriesDatabase representationBiomedical dataExecution timeQueriesMore memoryPerformance issuesSchemaValue representationRepresentationCR model
1997
Concept Locator: A Client-Server Application for Retrieval of UMLS Metathesaurus Concepts through Complex Boolean Query
Nadkarni P. Concept Locator: A Client-Server Application for Retrieval of UMLS Metathesaurus Concepts through Complex Boolean Query. Journal Of Biomedical Informatics 1997, 30: 323-336. PMID: 9339325, DOI: 10.1006/cbmr.1997.1433.Peer-Reviewed Original ResearchConceptsClient-server applicationsQuery expressionsQuery optimizerRelational database serverPurpose of retrievalComplex Boolean queriesMore SQL statementsComplex Boolean expressionsUMLS Metathesaurus conceptsDatabase serverBoolean queriesSQL statementsWildcard patternsUMLS MetathesaurusMetathesaurus conceptsBoolean expressionsQAV: querying entity-attribute-value metadata in a biomedical database
Nadkarni P. QAV: querying entity-attribute-value metadata in a biomedical database. Computer Methods And Programs In Biomedicine 1997, 53: 93-103. PMID: 9186046, DOI: 10.1016/s0169-2607(97)01815-4.Peer-Reviewed Original ResearchConceptsData retrievalClient-server applicationsGraphical front endSet-based queriesMetadata repositorySQL statementsData organizationKnowledge representationBiomedical databasesRetrievalProduction applicationsFront endQueriesServerMetadataDatabaseUsersRepositoryDatasetApplicationsRelation formRepresentation