Garlic: A New Flavor of Federated Query Processing for DB2

Summary: Garlic is a federated query processor for DB2 enabling access to non-relational sources beside relational data. It uses DB2 catalogs as an extensible metadata store, coordinates source-specific planning with a federated server, and extends the engine to execute remote queries. (summarized by gpt-5-nano on Feb 09 2026)

Paper ID: h1171b4c155f355b6
Venue: SIGMOD
Year: 2002
Pagerank: 9.8709217e-05
Overall Rank: 1,686 | 88.67%
DOI: 10.1145/564691.564751

Incoming Non-self Citations Over Time

Authors

1. Vanja Josifovski (IBM)
2. Peter Schwarz (IBM)
3. Laura Haas (IBM)
4. Eileen Lin (IBM)

BibTeX Citation

@inproceedings{josifovski_sigmod02,
        title = {{Garlic: A New Flavor of Federated Query Processing for DB2}},
        author = {Josifovski, Vanja and Schwarz, Peter and Haas, Laura and Lin, Eileen},
        series = {{SIGMOD} '02},
        booktitle = {Proceedings of the {ACM} {SIGMOD} International Conference on Management of Data},
        publisher = {Association for Computing Machinery},
        doi = {10.1145/564691.564751},
        url = {https://dl.acm.org/doi/10.1145/564691.564751},
        year = {2002}
}

Incoming Citations (Sorted by Pagerank)

Showing 21 of 21 citing papers.

Rank	Citing Paper	Year	Venue	Pagerank
905	Constraint-Based XML Query Rewriting for Data Integration	2004	SIGMOD	0.00013170652
2,207	Magpie: Python at Speed and Scale using Cloud Backends	2021	CIDR	8.8487039e-05
3,995	An Approach to Optimize Data Processing in Business Processes	2007	VLDB	6.86657e-05
4,415	Estimating Compilation Time of a Query Optimizer	2003	SIGMOD	6.6094699e-05
4,905	Data-Sharing Markets: Model, Protocol, and Algorithms to Incentivize the Formation of Data-Sharing Consortia	2023	SIGMOD	6.3624391e-05
6,576	Towards Query Optimizer as a Service (QOaaS) in a Unified LakeHouse Ecosystem: Can One QO Rule Them All?	2025	CIDR	5.7448779e-05
6,878	DAPHNE: An Open and Extensible System Infrastructure for Integrated Data Analysis Pipelines	2022	CIDR	5.657878e-05
7,404	Compliant Geo-distributed Query Processing	2021	SIGMOD	5.5357067e-05
7,410	POLAR: Adaptive and Non-invasive Join Order Selection via Plans of Least Resistance	2024	VLDB	5.5342768e-05
7,839	ExDRa: Exploratory Data Science on Federated Raw Data	2021	SIGMOD	5.4432099e-05
7,864	Blueprinting the Cloud: Unifying and Automatically Optimizing Cloud Data Infrastructures with BRAD	2024	VLDB	5.4367919e-05
7,990	From a Stream of Relational Queries to Distributed Stream Processing	2010	VLDB	5.4116144e-05
9,005	Parallel Querying with Non-Dedicated Computers	2005	VLDB	5.2388349e-05
9,115	Check Out the Big Brain on BRAD: Simplifying Cloud Data Processing with Learned Automated Data Meshes	2023	VLDB	5.2271833e-05
9,600	Language-Agnostic Integrated Queries in a Managed Polyglot Runtime	2021	VLDB	5.1548991e-05
10,187	Saving Money for Analytical Workloads in the Cloud	2024	VLDB	5.0651993e-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
12,961	Randomized Algorithms for Data Reconciliation in Wide Area Aggregate Query Processing	2007	VLDB	4.9793485e-05
13,021	Modeling and Querying Multidimensional Data Sources in Siebel Analytics: A Federated Relational System	2005	SIGMOD	4.9793485e-05
13,044	QoS-based Data Access and Placement for Federated Systems	2005	VLDB	4.9793485e-05

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.

Rank	Cited Paper	Year	Venue	Pagerank
109	Extensible/Rule Based Query Rewrite Optimization in Starburst	1992	SIGMOD	0.0003276959
173	Optimizing Queries across Diverse Data Sources	1997	VLDB	0.00026826959
182	Schema Mapping as Query Discovery	2000	VLDB	0.00026277842
468	Don’t Scrap It, Wrap It! A Wrapper Architecture for Legacy Data Sources	1997	VLDB	0.00017761038
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

Semantically Similar Papers

#	Overall Rank	Paper	Year	Venue
1	14,603	DB2 Common Server: Technology, Progress, & Directions	1995	VLDB
2	5,999	Heterogeneous Database Query Optimization in DB2 Universal DataJoiner	1998	VLDB
3	4,880	Loading a Cache with Query Results	1999	VLDB
4	186	Federated Database Systems for Managing Distributed, Heterogeneous, and Autonomous Databases	1991	VLDB
5	3,166	The Garlic Project	1996	SIGMOD
6	172	Combining Fuzzy Information from Multiple Systems	1996	PODS
7	13,044	QoS-based Data Access and Placement for Federated Systems	2005	VLDB
8	412	Fuzzy Queries in Multimedia Database Systems	1998	PODS
9	5,777	POP/FED: Progressive Query Optimization for Federated Queries in DB2	2006	VLDB
10	173	Optimizing Queries across Diverse Data Sources	1997	VLDB