Reverse Data Exchange: Coping with Nulls

Summary: Homomorphism-based reverse data exchange supporting source labeled nulls via extended identity/inverse and max extended recovery. Proves existence and shows max extended recoveries quantify TGDs' info loss, enabling reverse exchange and query answering. (summarized by gpt-5-mini on Feb 09 2026)

Paper ID: hea699b7e935c3788
Venue: PODS
Year: 2009
Pagerank: 5.8924289e-05
Overall Rank: 6,023 | 59.63%
DOI: 10.1145/1559795.1559800

Incoming Non-self Citations Over Time

Authors

1. Ronald Fagin (IBM)
2. Phokion G. Kolaitis (IBM; University of California Santa Cruz)
3. Lucian Popa (IBM)
4. Wang-Chiew Tan (University of California Santa Cruz)

BibTeX Citation

@inproceedings{fagin_pods09,
        address = {New York, NY, USA},
        series = {{PODS} '09},
        title = {{Reverse Data Exchange: Coping with Nulls}},
        url = {https://dl.acm.org/doi/10.1145/1559795.1559800},
        doi = {10.1145/1559795.1559800},
        booktitle = {Proceedings of the {ACM} {SIGMOD} Symposium on {Principles} of {Database} {Systems}},
        publisher = {Association for Computing Machinery},
        author = {Fagin, Ronald and Kolaitis, Phokion G. and Popa, Lucian and Tan, Wang-Chiew},
        year = {2009}
}

Incoming Citations (Sorted by Pagerank)

Showing 7 of 7 citing papers.

Rank	Citing Paper	Year	Venue	Pagerank
4,547	Data Exchange beyond Complete Data	2011	PODS	6.5336862e-05
4,675	Update Rewriting and Integrity Constraint Maintenance in a Schema Evolution Support System: PRISM++	2011	VLDB	6.4584174e-05
6,247	MapMerge: Correlating Independent Schema Mappings	2010	VLDB	5.8199336e-05
6,910	Query Processing under GLAV Mappings for Relational and Graph Databases	2013	VLDB	5.6336774e-05
8,038	Foundations of Schema Mapping Management	2010	PODS	5.385844e-05
8,510	Reflections on Schema Mappings, Data Exchange, and Metadata Management	2018	PODS	5.3119684e-05
12,441	Recovering Exchanged Data	2015	PODS	4.9605343e-05

Outgoing Citations (Sorted by Pagerank)

Showing 10 of 10 cited papers.

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

Rank	Cited Paper	Year	Venue	Pagerank
193	Applying Model Management to Classical Meta Data Problems	2003	CIDR	0.0002567932
429	Translating Web Data	2002	VLDB	0.00018417669
708	Composing Schema Mappings: Second-Order Dependencies to the Rescue	2004	PODS	0.00014605712
817	Composing Mappings Among Data Sources	2003	VLDB	0.00013671477
1,464	Inverting Schema Mappings	2006	PODS	0.00010547427
1,526	Composition of Mappings Given by Embedded Dependencies	2005	PODS	0.00010328706
2,402	Quasi-inverses of Schema Mappings	2007	PODS	8.5051123e-05
2,418	Implementing Mapping Composition	2006	VLDB	8.4831825e-05
2,860	Nested Mappings: Schema Mapping Reloaded	2006	VLDB	7.9123643e-05
3,026	The Recovery of a Schema Mapping: Bringing Exchanged Data Back	2008	PODS	7.7180269e-05

Semantically Similar Papers

#	Overall Rank	Paper	Year	Venue
1	4,428	Normalization and Optimization of Schema Mappings	2009	VLDB
2	4,547	Data Exchange beyond Complete Data	2011	PODS
3	4,719	Towards a Theory of Schema-Mapping Optimization	2008	PODS
4	7,384	Schema Mappings for Data Graphs	2017	PODS
5	3,004	Data Exchange and Incomplete Information	2006	PODS
6	1,464	Inverting Schema Mappings	2006	PODS
7	6,277	Inverting Schema Mappings: Bridging the Gap between Theory and Practice	2009	VLDB
8	3,026	The Recovery of a Schema Mapping: Bringing Exchanged Data Back	2008	PODS
9	2,402	Quasi-inverses of Schema Mappings	2007	PODS
10	12,441	Recovering Exchanged Data	2015	PODS