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Abstract: We propose a multi-dimensional language called nD-SQL with the following features: (i) nD-SQL supports queries that interoperate amongst multiple relational sources with heterogeneous schemas, including RDBMS and relational data marts, overcoming the mismatch between data and schema; (ii) it supports complex forms of restructuring that permit the visualization of n- dimensional data using the three physical dimensions of the relational model, viz., row, column, and relation; (iii) it... (Update)
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.... for handling queries at the core, include nD SQL, which is an SQL based query language suitable for querying multi dimensional data [2]. Query optimization for queries at the core may be considered along the following facets: ffl Data access optimization ffl Query...
...mismatch would still persist, if we need to specify a selection criteria over cubes for expressing arbitrary subsets of group bys. In [GL98] Gingras et. al have proposed a query language nD SQL for multi databases which include constructs for OLAP manipulation. Though it...
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BibTeX entry: (Update)
Gingras F. and Lakshmanan L.V.S. nD-SQL: a multi-dimensional language for interoperability and olap. VLDB, 1998. http://citeseer.ist.psu.edu/gingras98ndsql.html More
@inproceedings{ gingras98ndsql,
author = "Fr{\'e}d{\'e}ric Gingras and Laks V. S. Lakshmanan",
title = "{nD-{SQL}}: {A} Multi-Dimensional Language for Interoperability and {OLAP}",
booktitle = "Proc. 24th Int. Conf. Very Large Data Bases, {VLDB}",
month = "24--27~",
pages = "134--145",
year = "1998",
url = "citeseer.ist.psu.edu/gingras98ndsql.html" }
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204 Querying Object-Oriented Databases - Michael, Won et al. - 1992
187 Optimizing Queries Across Diverse Data Sources - Laura - 1997
185 the Computation of Multidimensional Aggregates - Agarwal - 1996
129 The Pegasus Heterogeneous Multidatabase System (context) - Ahmed, Smedt et al. - 1991
109 An Array-Based Algorithm for Simultaneous Multidimensional A.. - Zhao, Deshpande et al. - 1997
107 Using Semantic Values to Facilitate Interoperability Among H.. (context) - Sciore, Siegel et al. - 1994
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68 Query Optimization in a Heterogeneous DBMS (context) - Du, Krishnamurthy et al. - 1992
26 Using Heterogeneous Equivalences for Query Rewriting in Mult.. - Florescu - 1995
25 Query Folding - Quian - 1996
25 Declarative Definition of Object-Oriented Multidatabase Mapp.. - Chomicki, Litwin - 1993
24 Tables as a Paradigm for Querying and Restructuring - Marc, Laks et al. - 1996
22 Relations With Relation Names as Arguments: Algebra and Calc.. (context) - Kenneth - 1992
20 MSQL: A Multidatabase Language (context) - Litwin - 1989
17 The Object Database Standard: ODMG-93 Release (context) - Cattell - 1996
15 Query Languages for Relational Multidatabases (context) - Grant, Litwin et al. - 1993
11 Extending a Multidatabase Manipulation Language to Resolve S.. - Missier - 1995
11 Collections of Objects in SQL (context) - Beech - 1993
10 SchemaSQL -- a Language for Querying and Restructuring multi.. (context) - Sadri, Subramanian - 1996
9 Schema Architecture of the UniSQL/M Multidatabase System (context) - Kelley, Gala et al. - 1995
4 available from: http://www (context) - Server
4 Languages for Multi-database Interoperability - Fr'ed'eric, Laks et al. - 1997
3 SQL 3 articles and publications (context) - Home - 1996
1 a MultiDimensional Language for Interoperability and OLAP (context) - Fr'ed'eric, Laks et al.
1 A Foundation for Mulit-Dimensional Databases (context) - Gyssens, Lakshmanan - 1997
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