Relational Support for Flexible Schema Scenarios

Summary: Relational engine extensions enable flexible schemas via sparse storage, column-set operations, indices and statistics, plus OrdPath-based hierarchy querying. Economical metadata loading yields queries independent of column count; a wide-table prototype with experiments demonstrates scalable performance for heterogeneous, evolving data. (summarized by gpt-5-nano on Feb 09 2026)

Paper ID: 9754
Venue: VLDB
Year: 2008
Pagerank: 4.6513838e-05
Overall Rank: 7,786 | 45.84%
DOI: -

Incoming Non-self Citations Over Time

Authors

Incoming Citations (Sorted by Pagerank)

Showing 3 of 3 citing papers.

Rank	Citing Paper	Year	Venue	Pagerank
7,171	Leveraging Compression in the Tableau Data Engine	2014	SIGMOD	4.8117476e-05
8,147	A Comparison of Flexible Schemas for Software as a Service	2009	SIGMOD	4.5754849e-05
12,308	Filtered Statistics	2009	SIGMOD	4.1945683e-05

Outgoing Citations (Sorted by Pagerank)

Showing 12 of 12 cited papers.

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

Rank	Cited Paper	Year	Venue	Pagerank
446	Storing and Querying Ordered XML Using a Relational Database System	2002	SIGMOD	0.00022925415
463	The Design Of Xprs	1988	VLDB	0.00022464669
790	Exploiting Statistics on Query Expressions for Optimization	2002	SIGMOD	0.0001663283
849	ORDPATHs: Insert-Friendly XML Node Labels	2004	SIGMOD	0.00015962987
864	Storage and Querying of E-Commerce Data	2001	VLDB	0.00015813082
1,203	PIVOT and UNPIVOT: Optimization and Execution Strategies in an RDBMS	2004	VLDB	0.00013320373
2,771	A Relational Approach to Incrementally Extracting and Querying Structure in Unstructured Data	2007	VLDB	8.1421432e-05
3,397	Statistics on Views	2003	VLDB	7.1437062e-05
3,651	Conditional Selectivity for Statistics on Query Expressions	2004	SIGMOD	6.8768678e-05
4,433	The Case for a Wide-Table Approach to Manage Sparse Relational Data Sets	2007	SIGMOD	6.1935064e-05
6,336	Column Stores For Wide and Sparse Data	2007	CIDR	5.1056582e-05
7,789	Query Processing for SQL Updates	2004	SIGMOD	4.6510017e-05

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