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Definition and Application of Metaclasses in an Object-Oriented Database Model (1992)
| Venue: | In Proc. of the 9th Int. Conf. on Data Engineering, DE’93 |
| Citations: | 6 - 0 self |
BibTeX
@INPROCEEDINGS{Goers92definitionand,
author = {Jutta Goers and Andreas Heuer},
title = {Definition and Application of Metaclasses in an Object-Oriented Database Model},
booktitle = {In Proc. of the 9th Int. Conf. on Data Engineering, DE’93},
year = {1992},
pages = {373--380},
publisher = {IEEE Computer Society}
}
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Abstract
This paper presents the meta level concepts for an object-oriented database model. Up to now, systems including a metaclass concept are either (i) only implicitly supporting the management of meta information (like SMALLTALK) which restricts the application of this concept, or (ii) explicitly giving unrestricted access to manipulate metaclasses which can result in inconsistent states of the system. To make the explicit support more system-controlled, we use a partition of the meta scheme into two parts: (1) the system view and (2) the application view. We describe possible scheme level operations, the representation of methods and their implementation as a special kind of meta information, and a simple extension to the query algebra of the underlying object-oriented database system that allows users to query objects and meta objects within a single algebra expression. 1 Introduction Object-oriented database systems (OODBSs) [KA90, ZM90] had been introduced to support non-standard app...
Keyphrases
object-oriented database model meta information possible scheme level operation non-standard app unrestricted access application view metaclass concept system view meta level concept meta scheme introduction object-oriented database system query algebra single algebra expression inconsistent state special kind object-oriented database system explicit support simple extension meta object
