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TheRelationalModelWhyStudytheRelationalModel?RelationalDatabase:DefinitionsExampleInstanceofStudentsRelationRelationalQueryLanguagesTheSQLQueryLanguageTheSQLQueryLanguageQueryingMultipleRelationsCreatingRelationsinSQLDestroyingandAlteringRelationsAddingandDeletingTuplesIntegrityConstraints(ICs)PrimaryKeyConstraintsPrimaryandCandidateKeysinSQLForeignKeys,ReferentialIntegrityForeignKeysinSQLEnforcingReferentialIntegrityReferentialIntegrityinSQL/92WheredoICsComeFrom?ViewsViewsandSecurityLogicalDBDesign:ERtoRelationalRelationshipSetstoTablesReview:KeyConstraintsTranslatingERDiagramswithKeyConstraintsReview:ParticipationConstraintsParticipationConstraintsinSQL有一些全部参与暂时还不能转成关系Review:WeakEntitiesTranslatingWeakEntitySetsReview:ISAHierarchiesTranslatingISAHierarchiestoRelationsReview:Binaryvs.TernaryRelationshipsBinaryvs.TernaryRelationships(Contd.)聚集的转换RelationalModel:Summary
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