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Optimizing Queries across Diverse Data Sources

Summary: Garlic’s optimizer extends rule-based optimization to heterogeneous data integration, combining generic middleware rules with wrapper-supplied source capabilities. This modular design supports extensibility, incremental rule implementation, and effective cross-source plan generation. (summarized by gpt-5.6-luna on Jul 24 2026)

Paper ID
h6b19b674d5201419
Venue
VLDB
Year
1997
Pagerank
0.00026826959
Overall Rank
173 | 98.84%
DOI
-

Incoming Non-self Citations Over Time

Authors

BibTeX Citation

@article{haas_vldb97,
        title = {{Optimizing Queries across Diverse Data Sources}},
        author = {Haas, Laura M. and Kossmann, Donald and Wimmers, Edward L. and Yang, Jun},
        journal = {PVLDB},
        series = {{VLDB} '97},
        year = {1997}
}

Incoming Citations (Sorted by Pagerank)

Showing 50 of 53 citing papers.

Rank Citing Paper Year Venue Pagerank
53 Eddies: Continuously Adaptive Query Processing 2000 SIGMOD 0.00040860054
92 CrowdDB: Answering Queries with Crowdsourcing 2011 SIGMOD 0.00034672523
269 Reconciling Schemas of Disparate Data Sources: A Machine-Learning Approach 2001 SIGMOD 0.00022620777
334 An Adaptive Query Execution System for Data Integration* 1999 SIGMOD 0.00020691326
468 Don’t Scrap It, Wrap It! A Wrapper Architecture for Legacy Data Sources 1997 VLDB 0.00017761038
599 Extracting Structured Data from Web Pages 2003 SIGMOD 0.0001575536
824 Data Integration: The Teenage Years 2006 VLDB 0.00013646923
869 Query Optimization in the Presence of Limited Access Patterns 1999 SIGMOD 0.00013348278
1,130 WSQ/DSQ: A Practical Approach for Combined Querying of Databases and the Web* 2000 SIGMOD 0.00011902078
1,330 Catching the Boat with Strudel: Experiences with a Web-Site Management System 1998 SIGMOD 0.00010999761
1,567 Crossing the Structure Chasm 2003 CIDR 0.00010213092
1,686 Garlic: A New Flavor of Federated Query Processing for DB2 2002 SIGMOD 9.8709217e-05
1,784 System RX: One Part Relational, One Part XML 2005 SIGMOD 9.6511778e-05
2,127 Query Rewriting for Semistructured Data 1999 SIGMOD 9.0005009e-05
2,158 Open Data Integration 2018 VLDB 8.941016e-05
2,159 E-Services: A Look Behind the Curtain 2003 PODS 8.9372589e-05
2,324 Partial Results for Online Query Processing 2002 SIGMOD 8.6310477e-05
2,619 Cost-Based Optimization of Decision Support Queries using Transient-Views 1998 SIGMOD 8.2215744e-05
2,945 Mind Your Vocabulary: Query Mapping Across Heterogeneous Information Sources 1999 SIGMOD 7.8251112e-05
2,987 Adapting to Source Properties in Processing Data Integration Queries 2004 SIGMOD 7.7773398e-05
3,084 On Parallel Processing of Aggregate and Scalar Functions in Object-Relational DBMS 1998 SIGMOD 7.6630061e-05
3,095 Query Containment for Data Integration Systems 2000 PODS 7.6532922e-05
3,388 On Wrapping Query Languages and Efficient XML Integration 2000 SIGMOD 7.3520437e-05
3,620 Describing and Using Query Capabilities of Heterogeneous Sources 1997 VLDB 7.1548155e-05
3,744 Enterprise Information Integration: Successes, Challenges and Controversies 2005 SIGMOD 7.0560308e-05
4,638 Capability Based Mediation in TSIMMIS 1998 SIGMOD 6.4920463e-05
4,773 Cost Models DO Matter: Providing Cost Information for Diverse Data Sources in a Federated System 1999 VLDB 6.4212044e-05
4,880 Loading a Cache with Query Results 1999 VLDB 6.3714546e-05
5,091 Towards Scalable Hybrid Stores: Constraint-Based Rewriting to the Rescue 2019 SIGMOD 6.2797352e-05
5,191 Mapping Maintenance for Data Integration Systems 2005 VLDB 6.2356403e-05
5,492 Answering Queries Using Views with Arithmetic Comparisons 2002 PODS 6.1086968e-05
5,794 Network-Aware Query Processing for Stream-based Applications 2004 VLDB 5.9929614e-05
5,999 Heterogeneous Database Query Optimization in DB2 Universal DataJoiner 1998 VLDB 5.9198633e-05
6,060 Capturing both Types and Constraints in Data Integration 2003 SIGMOD 5.8991462e-05
6,362 Integrating Heterogeneous Overlapping Databases Through Object-Oriented Transformations 1999 VLDB 5.8092399e-05
6,664 Generating Efficient Plans for Queries Using Views 2001 SIGMOD 5.7161652e-05
6,668 Query Optimization over Crowdsourced Data 2013 VLDB 5.7147473e-05
6,969 Efficient Evaluation of Queries in a Mediator for WebSources 2002 SIGMOD 5.6315833e-05
7,158 Just-in-time Data Integration in Action 2010 VLDB 5.5967949e-05
7,490 SmartCIS: Integrating Digital and Physical Environments 2009 SIGMOD 5.5107726e-05
8,111 The Nimble Integration Engine 2001 SIGMOD 5.3942942e-05
8,438 Shasta: Interactive Reporting At Scale 2016 SIGMOD 5.3350162e-05
8,475 FORWARD: Data-Centric UIs using Declarative Templates that Efficiently Wrap Third-Party JavaScript Components 2014 VLDB 5.3342901e-05
9,115 Check Out the Big Brain on BRAD: Simplifying Cloud Data Processing with Learned Automated Data Meshes 2023 VLDB 5.2271833e-05
9,418 MOCHA: A Self-Extensible Database Middleware System for Distributed Data Sources 2000 SIGMOD 5.1803485e-05
9,585 Materializing Views with Minimal Size To Answer Queries 2003 PODS 5.1571823e-05
10,289 Request Window: an Approach to Improve Throughput of RDBMS-based Data Integration System by Utilizing Data Sharing Across Concurrent Distributed Queries 2007 VLDB 5.0446125e-05
12,906 The Data Ring: Community Content Sharing 2007 CIDR 4.9793485e-05
13,158 HyperQueries: Dynamic Distributed Query Processing on the Internet 2001 VLDB 4.9793485e-05
13,178 Approximate Query Translation Across Heterogeneous Information Sources 2000 VLDB 4.9793485e-05
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Outgoing Citations (Sorted by Pagerank)

Showing 15 of 15 cited papers.

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

Rank Cited Paper Year Venue Pagerank
1 Access Path Selection in a Relational Database Management System 1979 SIGMOD 0.0023947656
117 Querying Heterogeneous Information Sources Using Source Descriptions 1996 VLDB 0.00031630695
118 The EXODUS Optimizer Generator 1987 SIGMOD 0.00031392616
196 Grammar-like Functional Rules for Representing Query Optimization Alternatives 1988 SIGMOD 0.00025626873
273 Extensible Query Processing in Starburst 1989 SIGMOD 0.00022504729
468 Don’t Scrap It, Wrap It! A Wrapper Architecture for Legacy Data Sources 1997 VLDB 0.00017761038
689 Query Optimization in the Presence of Foreign Functions 1993 VLDB 0.00014752546
1,052 Answering Queries Using Limited External Query Processors 1996 PODS 0.00012275281
1,611 Intelligent Integration of Information 1993 SIGMOD 0.00010073084
1,623 Query Optimization in Heterogeneous DBMS 1992 VLDB 0.00010045919
2,384 Performance Tradeoffs for Client-Server Query Processing 1996 SIGMOD 8.5398467e-05
2,623 Processing Queries Over Generalization Hierarchies in a Multidatabase System 1983 VLDB 8.2114388e-05
3,209 Implementing an Interpreter for Functional Rules in a Query Optimizer 1988 VLDB 7.5364911e-05
3,849 EROC: A Toolkit for Building NEATO Query Optimizers 1996 VLDB 6.9810881e-05
4,795 Calibrating the Query Optimizer Cost Model of IRO-DB, an Object-Oriented Federated Database System 1996 VLDB 6.4123869e-05
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Semantically Similar Papers

# Overall Rank Paper Year Venue
1 3,166 The Garlic Project 1996 SIGMOD
2 3,338 On the Complexity of Query Result Diversification 2013 VLDB
3 3,000 Querying with Access Patterns and Integrity Constraints 2015 VLDB
4 6,362 Integrating Heterogeneous Overlapping Databases Through Object-Oriented Transformations 1999 VLDB
5 9,335 Enabling Rich Queries Over Heterogeneous Data From Diverse Sources In HealthCare 2020 CIDR
6 3,407 Quality-driven Integration of Heterogeneous Information Systems 1999 VLDB
7 1,686 Garlic: A New Flavor of Federated Query Processing for DB2 2002 SIGMOD
8 172 Combining Fuzzy Information from Multiple Systems 1996 PODS
9 4,880 Loading a Cache with Query Results 1999 VLDB
10 468 Don’t Scrap It, Wrap It! A Wrapper Architecture for Legacy Data Sources 1997 VLDB