ACM SIGMOD Anthology VLDB dblp.uni-trier.de

nD-SQL: A Multi-Dimensional Language for Interoperability and OLAP.

Frédéric Gingras, Laks V. S. Lakshmanan: nD-SQL: A Multi-Dimensional Language for Interoperability and OLAP. VLDB 1998: 134-145
@inproceedings{DBLP:conf/vldb/GingrasL98,
  author    = {Fr{\'e}d{\'e}ric Gingras and
               Laks V. S. Lakshmanan},
  editor    = {Ashish Gupta and
               Oded Shmueli and
               Jennifer Widom},
  title     = {nD-SQL: A Multi-Dimensional Language for Interoperability and
               OLAP},
  booktitle = {VLDB'98, Proceedings of 24rd International Conference on Very
               Large Data Bases, August 24-27, 1998, New York City, New York,
               USA},
  publisher = {Morgan Kaufmann},
  year      = {1998},
  isbn      = {1-55860-566-5},
  pages     = {134-145},
  ee        = {db/conf/vldb/GingrasL98.html},
  crossref  = {DBLP:conf/vldb/98},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}
BibTeX

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 captures sophisticated aggregations involving multiple granularities, to an arbitrary degree of resolution compared to CUBE, ROLLUP, and DRILLDOWN. We propose a formal model for a federation of relational sources and illustrate nD-SQL against it. We propose an extension to relational algebra, called restructuring relational algebra (RRA), capable of restructuring and aggregation. We propose an architecture for the implementation of an nD-SQL server, based on translating nD-SQL queries into equivalent RRA expressions, which are then optimized. We are currently implementing an nD-SQL server on the PC platform based on these ideas.

Copyright © 1998 by the VLDB Endowment. Permission to copy without fee all or part of this material is granted provided that the copies are not made or distributed for direct commercial advantage, the VLDB copyright notice and the title of the publication and its date appear, and notice is given that copying is by the permission of the Very Large Data Base Endowment. To copy otherwise, or to republish, requires a fee and/or special permission from the Endowment.


Online Paper

ACM SIGMOD DiSC

CDROM Version: Load the CDROM "DiSC, Volume 1 Number 1" and ...

ACM SIGMOD Anthology

DVD Version: Load ACM SIGMOD Anthology DVD 1" and ... BibTeX

Printed Edition

Ashish Gupta, Oded Shmueli, Jennifer Widom (Eds.): VLDB'98, Proceedings of 24rd International Conference on Very Large Data Bases, August 24-27, 1998, New York City, New York, USA. Morgan Kaufmann 1998, ISBN 1-55860-566-5
Contents BibTeX

References

[Agar+96]
Sameet Agarwal, Rakesh Agrawal, Prasad Deshpande, Ashish Gupta, Jeffrey F. Naughton, Raghu Ramakrishnan, Sunita Sarawagi: On the Computation of Multidimensional Aggregates. VLDB 1996: 506-521 BibTeX
[ASD+91]
Rafi Ahmed, Philippe De Smedt, Weimin Du, William Kent, Mohammad A. Ketabchi, Witold Litwin, Abbas Rafii, Ming-Chien Shan: The Pegasus Heterogeneous Multidatabase System. IEEE Computer 24(12): 19-27(1991) BibTeX
[Bee93]
David Beech: Collections of Objects in SQL3. VLDB 1993: 244-255 BibTeX
[Cat96]
R. G. G. Cattell: The Object Database Standard: ODMG-93 (Release 1.2). Morgan Kaufmann 1996
BibTeX
[CD97]
Surajit Chaudhuri, Umeshwar Dayal: An Overview of Data Warehousing and OLAP Technology. SIGMOD Record 26(1): 65-74(1997) BibTeX
[CL93]
Jan Chomicki, Witold Litwin: Declarative Definition of Object-Oriented Multidatabase Mappings. IWDOM 1992: 375-392 BibTeX
[DB296]
...
[DKS92]
Weimin Du, Ravi Krishnamurthy, Ming-Chien Shan: Query Optimization in a Heterogeneous DBMS. VLDB 1992: 277-291 BibTeX
[Flo95]
Daniela Florescu, Louiqa Raschid, Patrick Valduriez: Using Heterogeneous Equivalences for Query Rewriting in Multidatabase Systems. CoopIS 1995: 158-169 BibTeX
[GL97]
Marc Gyssens, Laks V. S. Lakshmanan: A Foundation for Multi-dimensional Databases. VLDB 1997: 106-115 BibTeX
[GL98]
...
[GLRS93]
John Grant, Witold Litwin, Nick Roussopoulos, Timos K. Sellis: Query Languages for Relational Multidatabases. VLDB J. 2(2): 153-171(1993) BibTeX
[GLS96]
Marc Gyssens, Laks V. S. Lakshmanan, Iyer N. Subramanian: Tables as a Paradigm for Querying and Restructuring. PODS 1996: 93-103 BibTeX
[GLS+97]
Frédéric Gingras, Laks V. S. Lakshmanan, Iyer N. Subramanian, Despina Papoulis, Nematollaah Shiri: Languages for Multi-database Interoperability. SIGMOD Conference 1997: 536-538 BibTeX
[Gray+96]
Jim Gray, Adam Bosworth, Andrew Layman, Hamid Pirahesh: Data Cube: A Relational Aggregation Operator Generalizing Group-By, Cross-Tab, and Sub-Total. ICDE 1996: 152-159 BibTeX
[Haa97]
Laura M. Haas, Donald Kossmann, Edward L. Wimmers, Jun Yang: Optimizing Queries Across Diverse Data Sources. VLDB 1997: 276-285 BibTeX
[KGK+95]
William Kelley, Sunit K. Gala, Won Kim, Tom C. Reyes, Bruce Graham: Schema Architecture of the UniSQL/M Multidatabase System. Modern Database Systems 1995: 621-648 BibTeX
[KLK91]
Ravi Krishnamurthy, Witold Litwin, William Kent: Language Features for Interoperability of Databases with Schematic Discrepancies. SIGMOD Conference 1991: 40-49 BibTeX
[KKS92]
Michael Kifer, Won Kim, Yehoshua Sagiv: Querying Object-Oriented Databases. SIGMOD Conference 1992: 393-402 BibTeX
[Lit89]
...
[LSS96]
Laks V. S. Lakshmanan, Fereidoon Sadri, Iyer N. Subramanian: SchemaSQL - A Language for Interoperability in Relational Multi-Database Systems. VLDB 1996: 239-250 BibTeX
[MR95]
Paolo Missier, Marek Rusinkiewicz: Extending a Multidatabase Manipulation Language to Resolve Schema and Data Conflicts. DS-6 1995: 93-115 BibTeX
[ORA]
...
[Qia96]
Xiaolei Qian: Query Folding. ICDE 1996: 48-55 BibTeX
[Ros92]
Kenneth A. Ross: Relations with Relation Names as Arguments: Algebra and Calculus. PODS 1992: 346-353 BibTeX
[SRC97]
Kenneth A. Ross, Divesh Srivastava, Damianos Chatziantoniou: Complex Aggregation at Multiple Granularities. EDBT 1998: 263-277 BibTeX
[SQL96]
...
[SSR94]
Edward Sciore, Michael Siegel, Arnon Rosenthal: Using Semantic Values to Falilitate Interoperability Among Heterogeneous Information Systems. ACM Trans. Database Syst. 19(2): 254-290(1994) BibTeX
[ZDN97]
Yihong Zhao, Prasad Deshpande, Jeffrey F. Naughton: An Array-Based Algorithm for Simultaneous Multidimensional Aggregates. SIGMOD Conference 1997: 159-170 BibTeX

Referenced by

  1. Panos Vassiliadis, Timos K. Sellis: A Survey of Logical Models for OLAP Databases. SIGMOD Record 28(4): 64-69(1999)
  2. Laks V. S. Lakshmanan, Fereidoon Sadri, Subbu N. Subramanian: On Efficiently Implementing SchemaSQL on an SQL Database System. VLDB 1999: 471-482
BibTeX
ACM SIGMOD Anthology - DBLP: [Home | Search: Author, Title | Conferences | Journals]
VLDB Proceedings: Copyright © by VLDB Endowment,
ACM SIGMOD Anthology: Copyright © by ACM (info@acm.org), Corrections: anthology@acm.org
DBLP: Copyright © by Michael Ley (ley@uni-trier.de), last change: Sat May 16 23:46:20 2009