A semantics of multiple inheritance
Information and Computation - Semantics of Data Types
F-logic: a higher-order language for reasoning about objects, inheritance, and scheme
SIGMOD '89 Proceedings of the 1989 ACM SIGMOD international conference on Management of data
Efficient management of transitive relationships in large data and knowledge bases
SIGMOD '89 Proceedings of the 1989 ACM SIGMOD international conference on Management of data
Telos: representing knowledge about information systems
ACM Transactions on Information Systems (TOIS)
Querying object-oriented databases
SIGMOD '92 Proceedings of the 1992 ACM SIGMOD international conference on Management of data
From structured documents to novel query facilities
SIGMOD '94 Proceedings of the 1994 ACM SIGMOD international conference on Management of data
Evaluating queries with generalized path expressions
SIGMOD '96 Proceedings of the 1996 ACM SIGMOD international conference on Management of data
STRUDEL: a Web site management system
SIGMOD '97 Proceedings of the 1997 ACM SIGMOD international conference on Management of data
Your mediators need data conversion!
SIGMOD '98 Proceedings of the 1998 ACM SIGMOD international conference on Management of data
SIGMOD '99 Proceedings of the 1999 ACM SIGMOD international conference on Management of data
WWW '99 Proceedings of the eighth international conference on World Wide Web
XML-GL: a graphical language for querying and restructuring XML documents
WWW '99 Proceedings of the eighth international conference on World Wide Web
Data on the Web: from relations to semistructured data and XML
Data on the Web: from relations to semistructured data and XML
The object data standard: ODMG 3.0
The object data standard: ODMG 3.0
On wrapping query languages and efficient XML integration
SIGMOD '00 Proceedings of the 2000 ACM SIGMOD international conference on Management of data
Foundations of Databases: The Logical Level
Foundations of Databases: The Logical Level
MedMaker: A Mediation System Based on Declarative Specifications
ICDE '96 Proceedings of the Twelfth International Conference on Data Engineering
SchemaSQL - A Language for Interoperability in Relational Multi-Database Systems
VLDB '96 Proceedings of the 22th International Conference on Very Large Data Bases
Quilt: An XML Query Language for Heterogeneous Data Sources
Selected papers from the Third International Workshop WebDB 2000 on The World Wide Web and Databases
Programming Constructs for Unstructured Data
DBLP-5 Proceedings of the Fifth International Workshop on Database Programming Languages
The ρ operator: discovering and ranking associations on the semantic web
ACM SIGMOD Record
Dynamic Generation of Intelligent Multimedia Presentations through Semantic Inferencing
ECDL '02 Proceedings of the 6th European Conference on Research and Advanced Technology for Digital Libraries
A Conceptual Modeling Approach for Semantics-Driven Enterprise Applications
On the Move to Meaningful Internet Systems, 2002 - DOA/CoopIS/ODBASE 2002 Confederated International Conferences DOA, CoopIS and ODBASE 2002
A Service Infrastructure for e-Science: The Case of the ARION System
CAiSE '02/ WES '02 Revised Papers from the International Workshop on Web Services, E-Business, and the Semantic Web
On labeling schemes for the semantic web
WWW '03 Proceedings of the 12th international conference on World Wide Web
Ρ-Queries: enabling querying for semantic associations on the semantic web
WWW '03 Proceedings of the 12th international conference on World Wide Web
WWW '03 Proceedings of the 12th international conference on World Wide Web
Computer Networks: The International Journal of Computer and Telecommunications Networking - Special issue: The Semantic Web: an evolution for a revolution
Finding the story: broader applicability of semantics and discourse for hypermedia generation
Proceedings of the fourteenth ACM conference on Hypertext and hypermedia
Remindin': semantic query routing in peer-to-peer networks based on social metaphors
Proceedings of the 13th international conference on World Wide Web
RDFPeers: a scalable distributed RDF repository based on a structured peer-to-peer network
Proceedings of the 13th international conference on World Wide Web
Choosing the best knowledge base system for large semantic web applications
Proceedings of the 13th international World Wide Web conference on Alternate track papers & posters
A Semantic-Aware Publish/Subscribe System with RDF Patterns
COMPSAC '04 Proceedings of the 28th Annual International Computer Software and Applications Conference - Volume 01
RStar: an RDF storage and query system for enterprise resource management
Proceedings of the thirteenth ACM international conference on Information and knowledge management
Making Biomedical Ontologies and Ontology Repositories Work
IEEE Intelligent Systems
An ontology-based publish/subscribe system
Proceedings of the 5th ACM/IFIP/USENIX international conference on Middleware
Foundations of semantic web databases
PODS '04 Proceedings of the twenty-third ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
Online curriculum on the semantic Web: the CSD-UoC portal for peer-to-peer e-learning
WWW '05 Proceedings of the 14th international conference on World Wide Web
Sanitizing using metadata in MetaXQuery
Proceedings of the 2005 ACM symposium on Applied computing
Information Retrieval and Knowledge Discovery Utilizing a BioMedical Patent Semantic Web
IEEE Transactions on Knowledge and Data Engineering
International Journal of High Performance Computing Applications
An efficient SQL-based RDF querying scheme
VLDB '05 Proceedings of the 31st international conference on Very large data bases
Annotating the semantic web using natural language
NLPXML '02 Proceedings of the 2nd workshop on NLP and XML - Volume 17
On the visualization of large-sized ontologies
Proceedings of the working conference on Advanced visual interfaces
Proceedings of the 15th international conference on World Wide Web
An Adaptation of the Vector-Space Model for Ontology-Based Information Retrieval
IEEE Transactions on Knowledge and Data Engineering
Semantic Web Infrastructure Using DataPile
WI-IATW '06 Proceedings of the 2006 IEEE/WIC/ACM international conference on Web Intelligence and Intelligent Agent Technology
Using the uni-level description (ULD) to support data-model interoperability
Data & Knowledge Engineering - Special issue: ER 2003
SPARQ2L: towards support for subgraph extraction queries in rdf databases
Proceedings of the 16th international conference on World Wide Web
Fast and practical indexing and querying of very large graphs
Proceedings of the 2007 ACM SIGMOD international conference on Management of data
BioPatentMiner: an information retrieval system for biomedical patents
VLDB '04 Proceedings of the Thirtieth international conference on Very large data bases - Volume 30
ACM Transactions on the Web (TWEB)
Indexing views to route queries in a PDMS
Distributed and Parallel Databases
Algebra model and experiment for semantic link network
International Journal of High Performance Computing and Networking
Integration of ontological knowledge within the authoring and retrieval of multimedia metaobjects
International Journal of Web and Grid Services
Applying Semantic Web technology to the integration of corporate information
International Journal of Web Engineering and Technology
A survey and classification of semantic search approaches
International Journal of Metadata, Semantics and Ontologies
Combining the semantic web with dynamic packaging systems
AIKED'06 Proceedings of the 5th WSEAS International Conference on Artificial Intelligence, Knowledge Engineering and Data Bases
An RDF Query Language based on Logic Programming
Electronic Notes in Theoretical Computer Science (ENTCS)
Enhance the interoperability of the library search systems with zSAPN
Proceedings of the 1st international conference on PErvasive Technologies Related to Assistive Environments
Graph-based query rewriting for knowledge sharing between peer ontologies
Information Sciences: an International Journal
SPARQLeR: Extended Sparql for Semantic Association Discovery
ESWC '07 Proceedings of the 4th European conference on The Semantic Web: Research and Applications
Semantic Based Substitution of Unsupported Access Points in the Library Meta-search Environments
ECDL '08 Proceedings of the 12th European conference on Research and Advanced Technology for Digital Libraries
The VLDB Journal — The International Journal on Very Large Data Bases
Learning to create data-integrating queries
Proceedings of the VLDB Endowment
nSPARQL: A Navigational Language for RDF
ISWC '08 Proceedings of the 7th International Conference on The Semantic Web
RDFS Reasoning and Query Answering on Top of DHTs
ISWC '08 Proceedings of the 7th International Conference on The Semantic Web
Receiver-side semantic reasoning for digital TV personalization in the absence of return channels
Multimedia Tools and Applications
Ifcowl: A case of transforming express schemas into ontologies
Artificial Intelligence for Engineering Design, Analysis and Manufacturing
A statistical metadata model for clinical trials' data management
Computer Methods and Programs in Biomedicine
Extending SPARQL with regular expression patterns (for querying RDF)
Web Semantics: Science, Services and Agents on the World Wide Web
Accessing Touristic Knowledge Bases through a Natural Language Interface
Knowledge Acquisition: Approaches, Algorithms and Applications
Traversing Ontologies to Extract Views
Modular Ontologies
Modelling, searching and utilising Grid resources and services
Proceedings of the 2006 conference on Information Modelling and Knowledge Bases XVII
Multi-Media Retrieval with Semantic Web: A Case Study in Airport Security Inspection Applications
Proceedings of the 2006 conference on Advances in Intelligent IT: Active Media Technology 2006
Semantics and complexity of SPARQL
ACM Transactions on Database Systems (TODS)
TOQL: Temporal Ontology Querying Language
SSTD '09 Proceedings of the 11th International Symposium on Advances in Spatial and Temporal Databases
Hypermedia presentation generation in Hera
Information Systems
ACM Transactions on Computational Logic (TOCL)
Modeling and querying provenance by extending CIDOC CRM
Distributed and Parallel Databases
LUBM: A benchmark for OWL knowledge base systems
Web Semantics: Science, Services and Agents on the World Wide Web
A subscribable peer-to-peer RDF repository for distributed metadata management
Web Semantics: Science, Services and Agents on the World Wide Web
A critical evaluation of ontology languages for geographic information retrieval on the Internet
Journal of Visual Languages and Computing
ICWE'03 Proceedings of the 2003 international conference on Web engineering
Integration of spatial XML documents with RDF
ICWE'03 Proceedings of the 2003 international conference on Web engineering
Modeling applications for the semantic web
ICWE'03 Proceedings of the 2003 international conference on Web engineering
Hera: development of semantic web information systems
ICWE'03 Proceedings of the 2003 international conference on Web engineering
Supporting complex thematic, spatial and temporal queries over semantic web data
GeoS'07 Proceedings of the 2nd international conference on GeoSpatial semantics
An object-oriented based algebra for ontologies and their instances
ADBIS'07 Proceedings of the 11th East European conference on Advances in databases and information systems
Leveraging the expressivity of grounded conjunctive query languages
OTM'07 Proceedings of the 2007 OTM Confederated international conference on On the move to meaningful internet systems - Volume Part II
OntoPath: a language for retrieving ontology fragments
OTM'07 Proceedings of the 2007 OTM Confederated international conference on On the move to meaningful internet systems: CoopIS, DOA, ODBASE, GADA, and IS - Volume Part I
Continuous RDF query processing over DHTs
ISWC'07/ASWC'07 Proceedings of the 6th international The semantic web and 2nd Asian conference on Asian semantic web conference
SPARK: adapting keyword query to semantic search
ISWC'07/ASWC'07 Proceedings of the 6th international The semantic web and 2nd Asian conference on Asian semantic web conference
Proceedings of the 2010 ACM SIGMOD International Conference on Management of data
Technically approaching the semantic web bottleneck
International Journal of Web Engineering and Technology
An agglomerative query model for discovery in linked data: semantics and approach
Procceedings of the 13th International Workshop on the Web and Databases
Query transformation in a CIDOC CRM based cultural metadata integration environment
ECDL'10 Proceedings of the 14th European conference on Research and advanced technology for digital libraries
nSPARQL: A navigational language for RDF
Web Semantics: Science, Services and Agents on the World Wide Web
Atlas: Storing, updating and querying RDF(S) data on top of DHTs
Web Semantics: Science, Services and Agents on the World Wide Web
MashUp web data sources and services based on semantic queries
Information Systems
Fusion - visually exploring and eliciting relationships in linked data
ISWC'10 Proceedings of the 9th international semantic web conference on The semantic web - Volume Part I
vSPARQL: A view definition language for the semantic web
Journal of Biomedical Informatics
Foundations of Semantic Web databases
Journal of Computer and System Sciences
Lightweight XML semantic integration: a global schema independent approach
International Journal of Information and Communication Technology
RDF packages: a scheme for efficient reasoning and querying over large-scale RDF data
Proceedings of the 12th International Conference on Information Integration and Web-based Applications & Services
Extending XQuery for semantic web reasoning
INAP'09 Proceedings of the 18th international conference on Applications of declarative programming and knowledge management
Journal of Web Engineering
Ontology and database mapping: a survey of current implementations and future directions
Journal of Web Engineering
Optimizing query shortcuts in RDF databases
ESWC'11 Proceedings of the 8th extended semantic web conference on The semanic web: research and applications - Volume Part II
A survey of structured P2P systems for RDF data storage and retrieval
Transactions on large-scale data- and knowledge-centered systems III
BRAHMS: a workbench RDF store and high performance memory system for semantic association discovery
ISWC'05 Proceedings of the 4th international conference on The Semantic Web
RUL: a declarative update language for RDF
ISWC'05 Proceedings of the 4th international conference on The Semantic Web
Trialogical e-learning and emergent knowledge artifacts
EC-TEL'06 Proceedings of the First European conference on Technology Enhanced Learning: innovative Approaches for Learning and Knowledge Sharing
ESWC'06 Proceedings of the 3rd European conference on The Semantic Web: research and applications
Ontology-Based searching framework for digital shapes
OTM'05 Proceedings of the 2005 OTM Confederated international conference on On the Move to Meaningful Internet Systems
SWQL – a query language for data integration based on OWL
OTM'05 Proceedings of the 2005 OTM Confederated international conference on On the Move to Meaningful Internet Systems
An approach to RDF(S) query, manipulation and inference on databases
WAIM'05 Proceedings of the 6th international conference on Advances in Web-Age Information Management
Metadata inference for document retrieval in a distributed repository
ASIAN'04 Proceedings of the 9th Asian Computing Science conference on Advances in Computer Science: dedicated to Jean-Louis Lassez on the Occasion of His 5th Cycle Birthday
Dynamic resource discovery for sensor networks
EUC'05 Proceedings of the 2005 international conference on Embedded and Ubiquitous Computing
Approximating query answering on RDF databases
World Wide Web
Evaluating conjunctive triple pattern queries over large structured overlay networks
ISWC'06 Proceedings of the 5th international conference on The Semantic Web
RDFSculpt: managing RDF schemas under set-like semantics
ESWC'05 Proceedings of the Second European conference on The Semantic Web: research and Applications
Querying RDF data from a graph database perspective
ESWC'05 Proceedings of the Second European conference on The Semantic Web: research and Applications
Conceptual graphs for semantic web applications
ICCS'05 Proceedings of the 13th international conference on Conceptual Structures: common Semantics for Sharing Knowledge
Utilizing resource importance for ranking semantic web query results
SWDB'04 Proceedings of the Second international conference on Semantic Web and Databases
Constructing and querying peer-to-peer warehouses of XML resources
SWDB'04 Proceedings of the Second international conference on Semantic Web and Databases
Semantic query routing and processing in p2p database systems: the ICS-FORTH SQPeer middleware
EDBT'04 Proceedings of the 2004 international conference on Current Trends in Database Technology
Keeping track of the semantic web: personalized event notification
ODBASE'06/OTM'06 Proceedings of the 2006 Confederated international conference on On the Move to Meaningful Internet Systems: CoopIS, DOA, GADA, and ODBASE - Volume Part I
Querying ontology based database using OntoQL (an ontology query language)
ODBASE'06/OTM'06 Proceedings of the 2006 Confederated international conference on On the Move to Meaningful Internet Systems: CoopIS, DOA, GADA, and ODBASE - Volume Part I
A grid-enabled digital library system for natural disaster metadata
EGC'05 Proceedings of the 2005 European conference on Advances in Grid Computing
Web and semantic web query languages: a survey
Proceedings of the First international conference on Reasoning Web
SDQNET: semantic distributed querying in loosely coupled data sources
ADBIS'06 Proceedings of the 10th East European conference on Advances in Databases and Information Systems
Event-condition-action rule languages for the semantic web
EDBT'06 Proceedings of the 2006 international conference on Current Trends in Database Technology
A semantic marketplace of negotiating agents
AP2PC'05 Proceedings of the 4th international conference on Agents and Peer-to-Peer Computing
RDFPath: path query processing on large RDF graphs with mapreduce
ESWC'11 Proceedings of the 8th international conference on The Semantic Web
Adaptive personalisation in self e-learning networks
KLGW'05 Proceedings of the 1st international Kaleidoscope Learning Grid Special Interest Group conference on Distributed e-Learning Environments
It's about the data: provenance as a tool for assessing data fitness
TaPP'12 Proceedings of the 4th USENIX conference on Theory and Practice of Provenance
Semantic web, digital libraries and the future of cultural Heritage
VAST'08 Proceedings of the 9th International conference on Virtual Reality, Archaeology and Cultural Heritage
A semantics-based framework for context-aware services: lessons learned and challenges
UIC'07 Proceedings of the 4th international conference on Ubiquitous Intelligence and Computing
Analysis of approaches to structured data on the web
Computer Standards & Interfaces
An agent based network resource planner for workflow applications
Multiagent and Grid Systems - Agent Based Computing: From Model to Implementation
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Real-scale Semantic Web applications, such as Knowledge Portals and E-Marketplaces, require the management of large volumes of metadata, i.e., information describing the available Web content and services. Better knowledge about their meaning, usage, accessibility or quality will considerably facilitate an automated processing of Web resources. The Resource Description Framework (RDF) enables the creation and exchange of metadata as normal Web data. Although voluminous RDF descriptions are already appearing, sufficiently expressive declarative languages for querying both RDF descriptions and schemas are still missing. In this paper, we propose a new RDF query language called RQL. It is a typed functional language (a la OQL) and relies on a formal model for directed labeled graphs permitting the interpretation of superimposed resource descriptions by means of one or more RDF schemas. RQL adapts the functionality of semistructured/XML query languages to the peculiarities of RDF but, foremost, it enables to uniformly query both resource descriptions and schemas. We illustrate the RQL syntax, semantics and typing system by means of a set of example queries and report on the performance of our persistent RDF Store employed by the RQL interpreter.