Towards Supporting Hard Schema Changes in TSE.

Young-Gook Ra, Elke A. Rundensteiner: Towards Supporting Hard Schema Changes in TSE. CIKM 1995: 290-295

@inproceedings{DBLP:conf/cikm/RaR95,
  author    = {Young-Gook Ra and
               Elke A. Rundensteiner},
  title     = {Towards Supporting Hard Schema Changes in TSE},
  booktitle = {CIKM '95, Proceedings of the 1995 International Conference on
               Information and Knowledge Management, November 28 - December
               2, 1995, Baltimore, Maryland, USA},
  publisher = {ACM},
  year      = {1995},
  pages     = {290-295},
  ee        = {db/conf/cikm/RaR95.html, http://doi.acm.org/10.1145/221270.221595},
  crossref  = {DBLP:conf/cikm/95},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

BibTeX

Abstract

Simulating schema evoiution using views offers many advantages over the direct modification of the schema. However, this view approach towards transparent schema evolution has not yet been implemented. One reason for this may be that views can't simulate capacity-augmenting schema changes due to the inherent limitation of view mechanisms that do not augment the underlying schema. One potential solution for this problem is to develop capacity-augmenting view support. However, existing OO view mechanisms do currently not support this capacity-augmenting feature. This paper thus proposes an alternative, more practical, solution to this problem. This solution is neither confined to object-preserving schema changes nor requires capacity-augmenting views. Note that our proposed solution is the first to also support hard changes such as converting values into an object, splitting two classes vertically, etc., in a transparent fashion. We demonstrate the feasibility of our solution by presenting general algorithms for hard schema changes as well as primitive ones.

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CIKM '95, Proceedings of the 1995 International Conference on Information and Knowledge Management, November 28 - December 2, 1995, Baltimore, Maryland, USA. ACM 1995
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References

[1]: Jay Banerjee, Won Kim, Hyoung-Joo Kim, Henry F. Korth: Semantics and Implementation of Schema Evolution in Object-Oriented Databases. SIGMOD Conference 1987: 311-322 BibTeX
[2]: Elisa Bertino: A View Mechanism for Object-Oriented Databases. EDBT 1992: 136-151 BibTeX
[3]: ...
[4]: Won Kim, Hong-Tai Chou: Versions of Schema for Object-Oriented Databases. VLDB 1988: 148-159 BibTeX
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[7]: Simon R. Monk, Ian Sommerville: Schema Evolution in OODBs Using Class Versioning. SIGMOD Record 22(3): 16-22(1993) BibTeX
[8]: Young-Gook Ra, Elke A. Rundensteiner: A Transparent Object-Oriented Schema Change Approach Using View Evolution. ICDE 1995: 165-172 BibTeX
[9]: Elke A. Rundensteiner: Multiview: A Methodology for Supporting Multiple Views in Object-Oriented Databases. VLDB 1992: 187-198 BibTeX
[10]: Cassio Souza dos Santos, Serge Abiteboul, Claude Delobel: Virtual Schemas and Bases. EDBT 1994: 81-94 BibTeX
[11]: Andrea H. Skarra, Stanley B. Zdonik: The Management of Changing Types in an Object-Oriented Database. OOPSLA 1986: 483-495 BibTeX
[12]: Markus Tresch, Marc H. Scholl: Schema Transformation without Database Reorganization. SIGMOD Record 22(1): 21-27(1993) BibTeX
[13]: Roberto Zicari: A Framework for Schema Updates In An Object-Oriented Database System. ICDE 1991: 2-13 BibTeX

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