Qunits: queried units for database search

Summary: Introduce qunits—independent queried units representing canonical query results, decoupling declarative DB predicate semantics from presentation/aggregation. Keyword search is executed over a corpus of qunits treated as IR documents, enabling standard ranking models instead of ad-hoc DB ranking; prototype validates feasibility. (summarized by gpt-5-mini on Feb 09 2026)

Paper ID: 124
Venue: CIDR
Year: 2009
Pagerank: 5.5769911e-05
Overall Rank: 7,635 | 47.62%
DOI: -

Incoming Non-self Citations Over Time

Authors

1. Arnab Nandi (University of Michigan)
2. H.V. Jagadish (University of Michigan)

BibTeX Citation

@inproceedings{nandi_cidr09,
        address = {Amsterdam, Netherlands},
        series = {{CIDR} '09},
        title = {{Qunits: queried units for database search}},
        booktitle = {Proceedings of the {Conference} on {Innovative} {Data} {Systems} {Research}},
        author = {Nandi, Arnab and Jagadish, H.V.},
        year = {2009}
}

Incoming Citations (Sorted by Pagerank)

Showing 3 of 3 citing papers.

Rank	Citing Paper	Year	Venue	Pagerank
6,201	Generating Preview Tables for Entity Graphs	2016	SIGMOD	5.9455064e-05
6,627	Schema-free SQL	2014	SIGMOD	5.8198662e-05
12,385	Keyword Search on Form Results	2011	VLDB	5.093636e-05

Outgoing Citations (Sorted by Pagerank)

Showing 16 of 16 cited papers.

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

Rank	Cited Paper	Year	Venue	Pagerank
37	DISCOVER: Keyword Search in Relational Databases	2002	VLDB	0.00048017193
77	XRANK: Ranked Keyword Search over XML Documents	2003	SIGMOD	0.00037048607
285	ObjectRank: Authority-Based Keyword Search in Databases	2004	VLDB	0.00022365284
301	Proximity Search in Databases	1998	VLDB	0.00022032878
302	Bidirectional Expansion For Keyword Search on Graph Databases	2005	VLDB	0.00021963347
314	Making Database Systems Usable	2007	SIGMOD	0.00021574636
496	Schema-Free XQuery	2004	VLDB	0.0001750537
929	Materialized View Selection and Maintenance Using Multi-Query Optimization	2001	SIGMOD	0.00013152103
1,194	Semantic Adaptation of Schema Mappings when Schemas Evolve	2005	VLDB	0.00011730556
1,305	Assisted Querying using Instant-Response Interfaces	2007	SIGMOD	0.00011235196
1,702	Schema Summarization	2006	VLDB	9.9697258e-05
2,160	Automated Creation of a Forms-based Database Query Interface	2008	VLDB	9.0607273e-05
2,220	Identifying Meaningful Return Information for XML Keyword Search	2007	SIGMOD	8.9277765e-05
4,131	Querying Complex Structured Databases	2007	VLDB	6.8834743e-05
7,620	Predicate-based Indexing of Enterprise Web Applications	2007	CIDR	5.5806924e-05
7,621	Unifying Data and Domain Knowledge Using Virtual Views	2007	VLDB	5.5806924e-05

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