book

Learning SPARQL

by Bob DuCharme

July 2011

Beginner

252 pages

6h 37m

English

O'Reilly Media, Inc.

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Why Learn SPARQL?Organization of This BookConventions Used in This BookDocumentation ConventionsUsing Code ExamplesSafari® Books OnlineHow to Contact UsAcknowledgments
The Data to QueryQuerying the DataMore Realistic Data and Matching on Multiple TriplesSearching for StringsWhat Could Go Wrong?Querying a Public Data SourceSummary
What Exactly Is the “Semantic Web”?URLs, URIs, IRIs, and NamespacesThe Resource Description Format (RDF)Storing RDF in FilesStoring RDF in DatabasesData TypingMaking RDF More Readable with Language Tags and LabelsBlank Nodes and Why They’re UsefulNamed GraphsReusing and Creating Vocabularies: RDF Schema and OWLLinked DataSPARQL’s Past, Present, and FutureThe SPARQL SpecificationsSummary
More Readable Query ResultsUsing the Labels Provided by DBpediaGetting Labels from Schemas and OntologiesData That Might Not Be ThereFinding Data That Doesn’t Meet Certain ConditionsSearching Further in the DataSearching with Blank NodesEliminating Redundant OutputCombining Different Search ConditionsFILTERing Data Based on ConditionsRetrieving a Specific Number of ResultsQuerying Named GraphsQueries in Your QueriesCombining Values and Assigning Values to VariablesSorting, Aggregating, Finding the Biggest and Smallest and...Sorting DataFinding the Smallest, the Biggest, the Count, the Average...Grouping Data and Finding Aggregate Values within GroupsQuerying a Remote SPARQL ServiceFederated Queries: Searching Multiple Datasets with One QuerySummary
Query Forms: SELECT, DESCRIBE, ASK, and CONSTRUCTCopying DataCreating New DataConverting DataFinding Bad DataDefining Rules with SPARQLGenerating Data About Broken RulesUsing Existing SPARQL Rules VocabulariesAsking for a Description of a ResourceSummary
Datatypes and QueriesRepresenting StringsComparing Values and Doing ArithmeticFunctionsProgram Logic FunctionsNode Type and Datatype Checking FunctionsNode Type Conversion FunctionsDatatype ConversionChecking, Adding, and Removing Spoken Language TagsString FunctionsNumeric FunctionsDate and Time FunctionsHash FunctionsExtension FunctionsSummary
Getting Started with FusekiAdding Data to a DatasetDeleting DataChanging Existing DataNamed GraphsDropping GraphsNamed Graph Syntax Shortcuts: WITH and USINGDeleting and Replacing Triples in Named GraphsSummary
SPARQL and Web Application DevelopmentSPARQL Query Results XML FormatSPARQL ProcessorsStandalone ProcessorsTriplestore SPARQL SupportMiddleware SPARQL SupportPublic Endpoints, Private EndpointsSummary

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For my mom and dad, Linda and Bob Sr., who always supported any ambitious projects I attempted, even when I left college because my bandmates and I thought we were going to become big stars. (We didn’t.)

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ISBN: 9781449311285Errata Page