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HINT: Heterogeneous Information Integration

Project supported by the Austrian Science Fund (FWF) under grant P25207-N23.


Contents


Duration:

The project started at December 1, 2012 and has the duration of 3 years.

Project team

Project Leader:

Project Staff (DBAI):

Goal of the project

The number of high quality datasets available on the web is steadily increasing. These data usually come in different formats — above all as relational, XML, and RDF data. Moreover, they are accessed via specific query languages such as SQL, XQuery, and SPARQL, respectively. However, applications are usually designed for a unified access to these diverse data. The integration of heterogeneous information is thus becoming an increasingly important challenge.

Information integration has evolved as a particularly active area of database research and enormous progress has been made in recent years. However, most of the research so far has been devoted to relational data. Other data formats like XML and RDF have received far less attention. A systematic study of information integration in a heterogeneous setting (where relational, XML, and RDF data have to be handled at the same time) is missing to date.

The focus of the HINT project is thus on heterogeneous information integration, including various schema mapping languages expressing relationships between database instances of different formats.

Publications

2014

[14] Capturing Relational Schemas and Functional Dependencies in RDFS.
Diego Calvanese, Wolfgang Fischl, Reinhard Pichler, Emanuel Sallinger, and Mantas Simkus. In Proceedings of AAAI '2014 (to appear). [ bib  ]
[13] Nested Dependencies: Structure and Reasoning.
Phokion Kolaitis, Reinhard Pichler, Emanuel Sallinger, and Vadim Savenkov.
In Proceedings of the 33rd ACM SIGMOD-SIGACT-SIGART Symposium on Principles of Database Systems, PODS'14, Snowbird, UT, USA, June 22-27, 2014, pp. 176-187. [ bib  |  pdf  ]
[12] Containment and equivalence of well-designed SPARQL.
Reinhard Pichler and Sebastian Skritek.
In Proceedings of the 33rd ACM SIGMOD-SIGACT-SIGART Symposium on Principles of Database Systems, PODS'14, Snowbird, UT, USA, June 22-27, 2014, pp. 39-50. [ bib  |  pdf  ]
[11] Expressiveness of guarded existential rule languages.
Georg Gottlob, Sebastian Rudolph, and Mantas Simkus.
In Proceedings of the 33rd ACM SIGMOD-SIGACT-SIGART Symposium on Principles of Database Systems, PODS'14, Snowbird, UT, USA, June 22-27, 2014, pp. 27-38. [ bib  |  pdf  ]
[10] Combined Complexity of Repair Checking and Consistent Query Answering.
Sebastian Arming, Reinhard Pichler, and Emanuel Sallinger.
In Proceedings of the 8th Alberto Mendelzon Workshop on Foundations of Data Management, Cartagena de Indias, Colombia, June 4-6, 2014. [ bib  |  pdf  ]
[9] On the Hardness of Counting the Solutions of SPARQL Queries.
Reinhard Pichler and Sebastian Skritek.
In Proceedings of the 8th Alberto Mendelzon Workshop on Foundations of Data Management, Cartagena de Indias, Colombia, June 4-6, 2014. [ bib  |  pdf  ]

2013

[8] Static analysis and optimization of semantic web queries.
Andrs Letelier, Jorge Prez, Reinhard Pichler, and Sebastian Skritek.
In ACM Trans. Database Syst. 38(4), 2013. [ bib  | pdf ]
[7] Towards General Representability in Knowledge Exchange.
Marcelo Arenas, Jorge Prez, and Emanuel Sallinger.
In Proceedings of the 7th Alberto Mendelzon International Workshop on Foundations of Data Management, Puebla/Cholula, Mexico, May 21-23, 2013. [ bib  | pdf ]
[6] Enhancing the Updatability of Projective Views.
Paolo Guagliardo, Reinhard Pichler, and Emanuel Sallinger.
In Proceedings of the 7th Alberto Mendelzon International Workshop on Foundations of Data Management, Puebla/Cholula, Mexico, May 21-23, 2013. [ bib  | pdf ]
[5] Efficient Updates of Uncertain Databases.
Andreas Hubmer, Reinhard Pichler, Sebastian Skritek, and Vadim Savenkov.
In Proceedings of the 7th Alberto Mendelzon International Workshop on Foundations of Data Management, Puebla/Cholula, Mexico, May 21-23, 2013. [ bib  | pdf ]
[4] Loop Elimination for Database Updates.
Vadim Savenkov, Reinhard Pichler, and Christoph Koch.
In Big Data - 29th British National Conference on Databases, BNCOD 2013, Oxford, UK, July 8-10, 2013. Proceedings. [ bib  | pdf ]
[3] Algorithms for Core Computation in Data Exchange.
Vadim Savenkov. In Data Exchange, Information, and Streams, pp. 97-127, 2013. [ bib |  pdf ]
[2] Reasoning about Schema Mappings.
Emanuel Sallinger. In Data Exchange, Information, and Streams, pp. 97-127, 2013. [ bib |  pdf ]
[1] Peer Data Management.
Armin Roth and Sebastian Skritek. In Data Exchange, Information, and Streams, pp. 185-215, 2013. [ bib |  pdf ]