Discrete Mathematics - Algebraic graph theory; a volume dedicated to Gert Sabidussi
Queries with incomplete answers over semistructured data
PODS '99 Proceedings of the eighteenth ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
Query rewriting for semistructured data
SIGMOD '99 Proceedings of the 1999 ACM SIGMOD international conference on Management of data
When is the evaluation of conjunctive queries tractable?
STOC '01 Proceedings of the thirty-third annual ACM symposium on Theory of computing
RQL: a declarative query language for RDF
Proceedings of the 11th international conference on World Wide Web
Foundations of Databases: The Logical Level
Foundations of Databases: The Logical Level
Hypothetical Datalog: Complexity and Expressiblity
ICDT '88 Proceedings of the 2nd International Conference on Database Theory
Conjunctive Query Containment Revisited
ICDT '97 Proceedings of the 6th International Conference on Database Theory
On the Semantics of Anonymous Identity and Reification
On the Move to Meaningful Internet Systems, 2002 - DOA/CoopIS/ODBASE 2002 Confederated International Conferences DOA, CoopIS and ODBASE 2002
Three Implementations of SquishQL, a Simple RDF Query Language
ISWC '02 Proceedings of the First International Semantic Web Conference on The Semantic Web
TRIPLE - A Query, Inference, and Transformation Language for the Semantic Web
ISWC '02 Proceedings of the First International Semantic Web Conference on The Semantic Web
The complexity of relational query languages (Extended Abstract)
STOC '82 Proceedings of the fourteenth annual ACM symposium on Theory of computing
Foundations of semantic web databases
PODS '04 Proceedings of the twenty-third ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
Data exchange: getting to the core
ACM Transactions on Database Systems (TODS) - Special Issue: SIGMOD/PODS 2003
Computing cores for data exchange: new algorithms and practical solutions
Proceedings of the twenty-fourth ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
Data exchange: computing cores in polynomial time
Proceedings of the twenty-fifth ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
Algorithms for acyclic database schemes
VLDB '81 Proceedings of the seventh international conference on Very Large Data Bases - Volume 7
Minimal Deductive Systems for RDF
ESWC '07 Proceedings of the 4th European conference on The Semantic Web: Research and Applications
SPARQLeR: Extended Sparql for Semantic Association Discovery
ESWC '07 Proceedings of the 4th European conference on The Semantic Web: Research and Applications
nSPARQL: A Navigational Language for RDF
ISWC '08 Proceedings of the 7th International Conference on The Semantic Web
The Expressive Power of SPARQL
ISWC '08 Proceedings of the 7th International Conference on The Semantic Web
Web Semantics: Science, Services and Agents on the World Wide Web
dRDF: entailment for domain-restricted RDF
ESWC'08 Proceedings of the 5th European semantic web conference on The semantic web: research and applications
RDF entailment as a graph homomorphism
ISWC'05 Proceedings of the 4th international conference on The Semantic Web
Semantics and complexity of SPARQL
ISWC'06 Proceedings of the 5th international conference on The Semantic Web
Logical reconstruction of RDF and ontology languages
PPSWR'05 Proceedings of the Third international conference on Principles and Practice of Semantic Web Reasoning
Logical foundations of RDF(S) with datatypes
Journal of Artificial Intelligence Research
Querying semantic web data with SPARQL
Proceedings of the thirtieth ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
Semantic annotation of digital music
Journal of Computer and System Sciences
Semantic navigation on the web of data: specification of routes, web fragments and actions
Proceedings of the 21st international conference on World Wide Web
Binary RDF for scalable publishing, exchanging and consumption in the web of data
Proceedings of the 21st international conference companion on World Wide Web
Static analysis and optimization of semantic web queries
PODS '12 Proceedings of the 31st symposium on Principles of Database Systems
Foundational aspects of semantic web optimization
PhD '12 Proceedings of the on SIGMOD/PODS 2012 PhD Symposium
Semi-automatic semantic annotation tool for digital music
iUBICOM'11 Proceedings of the 6th international conference on Ubiquitous and Collaborative Computing
Regular path queries on graphs with data
Proceedings of the 15th International Conference on Database Theory
On the diversity and availability of temporal information in linked open data
ISWC'12 Proceedings of the 11th international conference on The Semantic Web - Volume Part I
Querying graph databases with XPath
Proceedings of the 16th International Conference on Database Theory
Efficient processing of containment queries on nested sets
Proceedings of the 16th International Conference on Extending Database Technology
Binary RDF representation for publication and exchange (HDT)
Web Semantics: Science, Services and Agents on the World Wide Web
A trichotomy for regular simple path queries on graphs
Proceedings of the 32nd symposium on Principles of database systems
Static analysis and optimization of semantic web queries
ACM Transactions on Database Systems (TODS) - Invited papers issue
Querying Regular Graph Patterns
Journal of the ACM (JACM)
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The Semantic Web is based on the idea of a common and minimal language to enable large quantities of existing data to be analyzed and processed. This triggers the need to develop the database foundations of this basic language, which is the Resource Description Framework (RDF). This paper addresses this challenge by: 1) developing an abstract model and query language suitable to formalize and prove properties about the RDF data and query language; 2) studying the RDF data model, minimal and maximal representations, as well as normal forms; 3) studying systematically the complexity of entailment in the model, and proving complexity bounds for the main problems; 4) studying the notions of query answering and containment arising in the RDF data model; and 5) proving complexity bounds for query answering and query containment.