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Data Exchange: Getting to the Core

Summary: Core of any universal solution is unique (up to isomorphism), is the minimal universal solution, and optimally answers unions of conjunctive queries with inequalities. Complexity: core computation NP-hard in general and core-recognition DP-complete; provide broad data-exchange conditions yielding polynomial-time construction. (summarized by gpt-5-mini on Feb 09 2026)

Paper ID
1282
Venue
PODS
Year
2003
Pagerank
0.00021805832
Overall Rank
494 | 96.57%
DOI
-

Incoming Non-self Citations Over Time

Authors

Incoming Citations (Sorted by Pagerank)

Showing 50 of 53 citing papers.

Rank Citing Paper Year Venue Pagerank
621 Schema Mappings, Data Exchange, and Metadata Management 2005 PODS 0.00019005115
698 The Chase Revisited 2008 PODS 0.00018030148
1,078 Model Management 2.0: Manipulating Richer Mappings 2007 SIGMOD 0.00014245848
1,494 Inverting Schema Mappings 2006 PODS 0.00011693148
1,736 Generalized Schema-Mappings: From Termination To Tractability 2009 PODS 0.00010720323
2,211 XML Data Exchange: Consistency and Query Answering 2005 PODS 9.2771941e-05
2,452 Data Fusion – Resolving Data Conflicts for Integration 2009 VLDB 8.7839322e-05
2,562 Explaining Missing Answers to SPJUA Queries 2010 VLDB 8.5386194e-05
2,715 Peer Data Exchange 2005 PODS 8.2433779e-05
2,829 Computing Cores for Data Exchange: New Algorithms and Practical Solutions 2005 PODS 8.0546963e-05
3,004 Benchmarking the Chase 2017 PODS 7.7314538e-05
3,282 Foundations of Semantic Web Databases 2004 PODS 7.2808673e-05
3,324 On the Decidability and Finite Controllability of Query Processing in Databases with Incomplete Information 2006 PODS 7.2213002e-05
3,424 Data Exchange: Computing Cores in Polynomial Time 2006 PODS 7.110765e-05
3,502 Data Exchange and Incomplete Information 2006 PODS 7.0366655e-05
3,643 The Complexity of Data Exchange 2006 PODS 6.8862411e-05
3,830 ++Spicy: an Open-Source Tool for Second-Generation Schema Mapping and Data Exchange 2011 VLDB 6.7193951e-05
3,866 Designing and Refining Schema Mappings via Data Examples 2011 SIGMOD 6.6837e-05
3,937 On Reconciling Data Exchange, Data Integration, and Peer Data Management 2007 PODS 6.6159574e-05
4,396 Mapping Adaptation under Evolving Schemas 2003 VLDB 6.2239611e-05
4,405 On Preservation under Homomorphisms and Unions of Conjunctive Queries 2004 PODS 6.2156238e-05
4,466 Data Exchange and Schema Mappings in Open and Closed Worlds 2008 PODS 6.1601459e-05
4,513 Core Schema Mappings 2009 SIGMOD 6.1227596e-05
4,705 Locally Consistent Transformations and Query Answering in Data Exchange 2004 PODS 5.9830709e-05
4,752 Normalization and Optimization of Schema Mappings 2009 VLDB 5.9481448e-05
4,907 DEMo: Data Exchange Modeling Tool 2009 VLDB 5.8359897e-05
4,978 Towards a Theory of Schema-Mapping Optimization 2008 PODS 5.7881299e-05
5,000 CWA-Solutions for Data Exchange Settings with Target Dependencies 2007 PODS 5.774558e-05
5,295 Scalable Data Exchange with Functional Dependencies 2010 VLDB 5.580776e-05
5,659 Implementation Strategies for Views over Property Graphs 2024 SIGMOD 5.3847762e-05
5,717 Query Processing under GLAV Mappings for Relational and Graph Databases 2013 VLDB 5.3553228e-05
5,779 Lenses: An On-Demand Approach to ETL 2015 VLDB 5.3307398e-05
5,897 Answering Aggregate Queries in Data Exchange 2008 PODS 5.2842198e-05
6,099 WOO: A Scalable and Multi-tenant Platform for Continuous Knowledge Base Synthesis 2013 VLDB 5.2104516e-05
6,186 On Provenance Minimization 2011 PODS 5.166082e-05
6,470 Exploiting Equality Generating Dependencies in Checking Chase Termination 2016 VLDB 5.0513478e-05
6,758 Data Migration using Datalog Program Synthesis 2020 VLDB 4.937199e-05
6,858 When is Naive Evaluation Possible? 2013 PODS 4.9060157e-05
7,078 Laconic Schema Mappings: Computing the Core with SQL Queries 2009 VLDB 4.8424931e-05
7,463 Automated Migration of Hierarchical Data to Relational Tables using Programming-by-Example 2018 VLDB 4.7232241e-05
7,509 Optimizing the Chase: Scalable Data Integration under Constraints 2014 VLDB 4.7180617e-05
7,649 Foundations of Schema Mapping Management 2010 PODS 4.6884158e-05
7,707 Concise and Expressive Mappings with +Spicy 2009 VLDB 4.6721964e-05
8,484 Chase Termination: A Constraints Rewriting Approach 2010 VLDB 4.5007769e-05
8,851 Efficient Approximations of Conjunctive Queries 2012 PODS 4.4363908e-05
8,954 Understanding Queries by Conditional Instances 2022 SIGMOD 4.4221863e-05
9,037 Transforming Property Graphs 2024 VLDB 4.4039656e-05
9,182 Leveraging Query Logs for Schema Mapping Generation in U-MAP 2011 SIGMOD 4.3806885e-05
9,422 Nested Dependencies: Structure and Reasoning 2014 PODS 4.3441378e-05
12,082 Getting Unique Solution in Data Exchange 2013 VLDB 4.1945683e-05
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Outgoing Citations (Sorted by Pagerank)

Showing 8 of 8 cited papers.

Citations counted here include only citations to other VLDB/SIGMOD/CIDR/PODS papers in this database.

Rank Cited Paper Year Venue Pagerank
38 Testing Implications Of Data Dependencies 1979 SIGMOD 0.00075110004
48 Data Integration: A Theoretical Perspective 2002 PODS 0.00069720859
173 Schema Mapping as Query Discovery 2000 VLDB 0.00038627829
297 Complexity of Answering Queries Using Materialized Views 1998 PODS 0.00028596715
480 Translating Web Data 2002 VLDB 0.00022191997
915 The Complexity of Evaluating Relational Queries 1983 PODS 0.0001538509
2,058 Functional and Inclusion Dependencies: A Graph Theoretic Approach 1984 PODS 9.6585264e-05
2,401 Physical Data Independence, Constraints, and Optimization with Universal Plans 1999 VLDB 8.8954126e-05
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Semantically Similar Papers

Overall Rank Paper Year Venue Pagerank
3,502 Data Exchange and Incomplete Information 2006 PODS 7.0366655e-05
5,000 CWA-Solutions for Data Exchange Settings with Target Dependencies 2007 PODS 5.774558e-05
5,897 Answering Aggregate Queries in Data Exchange 2008 PODS 5.2842198e-05
7,078 Laconic Schema Mappings: Computing the Core with SQL Queries 2009 VLDB 4.8424931e-05
4,705 Locally Consistent Transformations and Query Answering in Data Exchange 2004 PODS 5.9830709e-05
2,715 Peer Data Exchange 2005 PODS 8.2433779e-05
4,513 Core Schema Mappings 2009 SIGMOD 6.1227596e-05
3,643 The Complexity of Data Exchange 2006 PODS 6.8862411e-05
2,829 Computing Cores for Data Exchange: New Algorithms and Practical Solutions 2005 PODS 8.0546963e-05
3,424 Data Exchange: Computing Cores in Polynomial Time 2006 PODS 7.110765e-05