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Abstract: One of the objectives of ooDBMSs is to use type-specific methods for manipulating objects, in order to maintain the consistency of the database. This is, however, little help for the method implementor as far as the model-inherent constraints are concerned. We propose a set of generic update operations that maintain integrity constraints such as types, class memberships, subtype-, subclass-relationships, and class predicates. The operations can be used for implementing type-specific update... (Update)
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...changing function values used in the class predicate. For more details on the effects of updates in connection with class prediactes see [LS91] Set assigns new values to functions. Let e be a variable holding an employee, then set [ salary=3,000 ] e) assigns a new salary to e....
...both the virtual schema and its corresponding virtual instance. This simple algebra can express all the view operators proposed in [KR96, LS92, dS95b, KRR95, CTR96, KR96] Keywords: object database systems, views, data model, object algebra, multiple instantiation,...
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BibTeX entry: (Update)
C. Laasch and M.H. Scholl. Generic update operations keeping object-oriented databases consistent. In Proc. GI Workshop Information Systems and AI, Ulm, Germany, February 1992. IFB 303, Springer Verlag, Heidelberg. http://citeseer.ist.psu.edu/laasch92generic.html More
@inproceedings{ laasch92generic,
author = "Christian Laasch and Marc H. Scholl",
title = "Generic Update Operations Keeping Object-Oriented Databases Consistent",
booktitle = "{IS}/{KI}",
pages = "40-55",
year = "1992",
url = "citeseer.ist.psu.edu/laasch92generic.html" }
Citations (may not include all citations):1274 Object-Oriented Software Construction (context) - Meyer - 1988
480 An overview of the KL-ONE knowledge representation system (context) - Brachman, Schmolze - 1985
196 Objects and views - Abiteboul, Bonner - 1991
142 Updatable views in object-oriented databases - Scholl, Laasch et al. - 1991
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11 The object-oriented functional data language (context) - Mannino, Choi et al. - 1990
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1 Classifying classes and views in class hierarchies (context) - Nguyen - 1991
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