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Using Witness Generators to Support Bi-directional Update Between Object-Based Databases

Summary: Shows incremental uni-/bi-directional update for object DBs with SPJ+OID-invention ILOG is, without auxiliaries, essentially graph-isomorphism hard. Introduces "witness" auxiliary data to bring uni-directional update to LOGSPACE and gives a limited "witness-generator" procedure enabling bi-directional update in LOGSPACE. (summarized by gpt-5-mini on Feb 09 2026)

Paper ID
1067
Venue
PODS
Year
1995
Pagerank
6.2269846e-05
Overall Rank
5,413 | 62.87%
DOI
10.1145/212433.220213

Incoming Non-self Citations Over Time

Authors

BibTeX Citation

@inproceedings{chang_pods95,
        address = {New York, NY, USA},
        series = {{PODS} '95},
        title = {{Using Witness Generators to Support Bi-directional Update Between Object-Based Databases}},
        url = {https://dl.acm.org/doi/10.1145/212433.220213},
        doi = {10.1145/212433.220213},
        booktitle = {Proceedings of the {ACM} {SIGMOD} Symposium on {Principles} of {Database} {Systems}},
        publisher = {Association for Computing Machinery},
        author = {Chang, Ti-Pin and Hull, Richard},
        year = {1995}
}

Incoming Citations (Sorted by Pagerank)

Showing 2 of 2 citing papers.

Rank Citing Paper Year Venue Pagerank
454 Using Schema Matching to Simplify Heterogeneous Data Translation 1998 VLDB 0.00018133578
1,609 Managing Semantic Heterogeneity in Databases : A Theoretical Perspective 1997 PODS 0.00010225236
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Outgoing Citations (Sorted by Pagerank)

Showing 6 of 6 cited papers.

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

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