A Framework for Supporting Data Integration Using the Materialized and Virtual Approaches.

@inproceedings{DBLP:conf/sigmod/HullZ96,
  author    = {Richard Hull and
               Gang Zhou},
  editor    = {H. V. Jagadish and
               Inderpal Singh Mumick},
  title     = {A Framework for Supporting Data Integration Using the Materialized
               and Virtual Approaches},
  booktitle = {Proceedings of the 1996 ACM SIGMOD International Conference on
               Management of Data, Montreal, Quebec, Canada, June 4-6, 1996},
  publisher = {ACM Press},
  year      = {1996},
  pages     = {481-492},
  ee        = {http://doi.acm.org/10.1145/233269.233365, db/conf/sigmod/HullZ96.html},
  crossref  = {DBLP:conf/sigmod/96},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

Abstract

This paper presents a framework for data integration currently under development in the Squirrel project. The framework is based on a special class of mediators, called Squirrel integration mediators. These mediators can support the traditional virtual and materialized approaches, and also hybrids of them.

In the Squirrel mediators, a relation in the integrated view can be supported as (a) fully materialized, (b) fully virtual, or (c) partially materialzed (i.e., with some attributes materialized and other attributes virtual). In general, (partially) materialized relations of the integrated view are maintained by incremental updates from the source databases. Squirrel mediators provide two approaches for doing this: (1) materialize all needed auxiliary data, so that data sources do not have to be queried when processing the incremental updates; or (2) leave some or all of the auxiliary data virtual, and query selected source databases when processing incremental updates.

The paper presents formal notions of consistency and "freshness" for integrated views defined over multiple autonomous source databases. It is shown that Squirrel mediators satisfy these properties.

Copyright © 1996 by the ACM, Inc., used by permission. Permission to make digital or hard copies is granted provided that copies are not made or distributed for profit or direct commercial advantage, and that copies show this notice on the first page or initial screen of a display along with the full citation.

ACM SIGMOD Anthology

CDROM Version: Load the CDROM "Volume 1 Issue 1, SIGMOD '93-'97" and ...

• Windows: Click the letter of your CD drive
  A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
• Mac: Click here
• UNIX/LINUX: mount the CD and click on the path of your mount point:
  /Anthology/smod9397 or /cdrom

• Windows: Click the letter of your CD drive
  A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
• Mac: Click here
• UNIX/LINUX: mount the DVD and click on the path of your mount point:
  /Anthology/aDVD1 or /dvd

Printed Edition

Online Edition: ACM Digital Library

References

[ACHK93]

Yigal Arens, Chin Y. Chee, Chun-Nan Hsu, Craig A. Knoblock: Retrieving and Integrating Data from Multiple Information Sources. Int. J. Cooperative Inf. Syst. 2(2): 127-158(1993) BibTeX

[ADD+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

[BDD+95]

...

[BLT86]

José A. Blakeley, Per-Åke Larson, Frank Wm. Tompa: Efficiently Updating Materialized Views. SIGMOD Conference 1986: 61-71 BibTeX

[CGL+96]

Latha S. Colby, Timothy Griffin, Leonid Libkin, Inderpal Singh Mumick, Howard Trickey: Algorithms for Deferred View Maintenance. SIGMOD Conference 1996: 469-480 BibTeX

[Cha94]

...

[CW91]

Stefano Ceri, Jennifer Widom: Deriving Production Rules for Incremental View Maintenance. VLDB 1991: 577-589 BibTeX

[Dal95]

...

[DH84]

Umeshwar Dayal, Hai-Yann Hwang: View Definition and Generalization for Database Integration in a Multidatabase System. IEEE Trans. Software Eng. 10(6): 628-645(1984) BibTeX

[DHR96]

Michael Doherty, Richard Hull, Mohammed Rupawalla: Structures for Manipulating Proposed Updates in Object-Oriented Databases. SIGMOD Conference 1996: 306-317 BibTeX

[GHJ96]

Shahram Ghandeharizadeh, Richard Hull, Dean Jacobs: Heraclitus: Elevating Deltas to be First-Class Citizens in a Database Programming Language. ACM Trans. Database Syst. 21(3): 370-426(1996) BibTeX

[GJM96]

Ashish Gupta, H. V. Jagadish, Inderpal Singh Mumick: Data Integration using Self-Maintainable Views. EDBT 1996: 140-144 BibTeX

[GL95]

Timothy Griffin, Leonid Libkin: Incremental Maintenance of Views with Duplicates. SIGMOD Conference 1995: 328-339 BibTeX

[GMS93]

Ashish Gupta, Inderpal Singh Mumick, V. S. Subrahmanian: Maintaining Views Incrementally. SIGMOD Conference 1993: 157-166 BibTeX

[HJ91]

Richard Hull, Dean Jacobs: Language Constructs for Programming Active Databases. VLDB 1991: 455-467 BibTeX

[HZ96]

...

[LMR90]

Witold Litwin, Leo Mark, Nick Roussopoulos: Interoperability of Multiple Autonomous Databases. ACM Comput. Surv. 22(3): 267-293(1990) BibTeX

[SBG+81]

...

[T+90]

Gomer Thomas, Glenn R. Thompson, Chin-Wan Chung, Edward Barkmeyer, Fred Carter, Marjorie Templeton, Stephen Fox, Berl Hartman: Heterogeneous Distributed Database Systems for Production Use. ACM Comput. Surv. 22(3): 237-266(1990) BibTeX

[WHW89]

...

[Wie92]

Gio Wiederhold: Mediators in the Architecture of Future Information Systems. IEEE Computer 25(3): 38-49(1992) BibTeX

[ZGHW95]

Yue Zhuge, Hector Garcia-Molina, Joachim Hammer, Jennifer Widom: View Maintenance in a Warehousing Environment. SIGMOD Conference 1995: 316-327 BibTeX

[ZHK95]

Gang Zhou, Richard Hull, Roger King: Generating Data Integration Mediators that Use Materialization. J. Intell. Inf. Syst. 6(2/3): 199-221(1996) BibTeX

[ZHKF95]

Gang Zhou, Richard Hull, Roger King, Jean-Claude Franchitti: Using Object Matching and Materialization to Integrate Heterogeneous Databases. CoopIS 1995: 4-18 BibTeX