Synchronizing a database to Improve Freshness

Summary: Local-copy synchronization for autonomous data sources; defines freshness metrics and change models. Analytical evaluation of synchronization policies; 270-site, 4-month experiments show the proposed policy improves freshness vs current approaches. (summarized by gpt-5-nano on Feb 09 2026)

Paper ID: 3240
Venue: SIGMOD
Year: 2000
Pagerank: 0.00010220368
Overall Rank: 1,610 | 88.96%
DOI: 10.1145/342009.335391

Incoming Non-self Citations Over Time

Authors

1. Junghoo Cho (Stanford University)
2. Hector Garcia-Molina (Stanford University)

BibTeX Citation

@inproceedings{cho_sigmod00,
        title = {{Synchronizing a database to Improve Freshness}},
        author = {Cho, Junghoo and Garcia-Molina, Hector},
        series = {{SIGMOD} '00},
        booktitle = {Proceedings of the {ACM} {SIGMOD} International Conference on Management of Data},
        publisher = {Association for Computing Machinery},
        doi = {10.1145/342009.335391},
        url = {https://dl.acm.org/doi/10.1145/342009.335391},
        year = {2000}
}

Incoming Citations (Sorted by Pagerank)

Showing 12 of 12 citing papers.

Rank	Citing Paper	Year	Venue	Pagerank
340	Crawling the Hidden Web	2001	VLDB	0.00020711119
1,195	Best-Effort Cache Synchronization with Source Cooperation	2002	SIGMOD	0.00011727947
1,393	Truth Discovery and Copying Detection in a Dynamic World	2009	VLDB	0.00010934682
2,438	FAS - a Freshness-Sensitive Coordination Middleware for a Cluster of OLAP Components	2002	VLDB	8.57985e-05
4,453	Update Propagation Strategies for Improving the Quality of Data on the Web	2001	VLDB	6.6942566e-05
6,796	Using Latency-Recency Profiles for Data Delivery on the Web	2002	VLDB	5.7707686e-05
7,532	The Evolution of the Web and Implications for an Incremental Crawler	2000	VLDB	5.6029996e-05
8,554	WIC: A General-Purpose Algorithm for Monitoring Web Information Sources	2004	VLDB	5.4119882e-05
8,556	Effective Change Detection Using Sampling	2002	VLDB	5.4119882e-05
12,426	Optimizing Content Freshness of Relations Extracted From the Web Using Keyword Search	2010	SIGMOD	5.093636e-05
12,528	SHARC: Framework for Quality-Conscious Web Archiving	2009	VLDB	5.093636e-05
12,573	Maintaining Dynamic Channel Profiles on the Web	2008	VLDB	5.093636e-05

Outgoing Citations (Sorted by Pagerank)

Showing 2 of 2 cited papers.

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

Rank	Cited Paper	Year	Venue	Pagerank
11	Implementing Data Cubes Efficiently	1996	SIGMOD	0.00071822821
391	View Maintenance in a Warehousing Environment	1995	SIGMOD	0.00019370653

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2	4,453	Update Propagation Strategies for Improving the Quality of Data on the Web	2001	VLDB
3	6,067	Extending Logging for Database Snapshot Refresh	1987	VLDB
4	6,401	Analytical Modeling of Materialized View Maintenance	1988	PODS
5	8,556	Effective Change Detection Using Sampling	2002	VLDB
6	5,578	Relaxed Currency Serializability for Middle-Tier Caching and Replication	2006	SIGMOD
7	1,152	Fast Algorithms for Maintaining Replica Consistency in Lazy Master Replicated Databases	1999	VLDB
8	6,795	Balancing Performance and Data Freshness in Web Database Servers	2003	VLDB
9	1,195	Best-Effort Cache Synchronization with Source Cooperation	2002	SIGMOD
10	12,426	Optimizing Content Freshness of Relations Extracted From the Web Using Keyword Search	2010	SIGMOD