Results 71 to 80 of about 1,262 (104)

OODBMS Metamodel Supporting Configuration Management of Large Applications

2002
Many practical cases of database schema evolution require an effective support from configuration management. Although DBMS construction and software configuration management (SCM) constitute the well established areas of research, they are usually considered in separation from each other.
Piotr Habela, Kazimierz Subieta
openaire   +1 more source

A difference-based version model for OODBMS

Proceedings 1998 Asia Pacific Software Engineering Conference (Cat. No.98EX240), 2002
Data versioning is important for many applications such as CASE, CAD and CAM. New design objects in these applications are usually created from existing ones because they share a large degree of similarity. In this paper we propose a difference-based version model for object-oriented database systems.
null Kuen-Fang Jea, null Hwai-Bih Feng, null Yang-Ren Yau, null Shih-Kung Chen, null Jian-Cheng Dai   +4 more
openaire   +1 more source

The scalability of an object descriptor architecture OODBMS

Proceedings. IDEAS'99. International Database Engineering and Applications Symposium (Cat. No.PR00265), 2003
An object database management system (OODBMS) has been often criticized for its alleged insufficient scalability for a large-scale production system. We investigated the scalability issue on a commercial OODBMS with a focus on the scalability with respect to the number of objects.
K.K. Yu, B.S. Lee, M.R. Olson
openaire   +1 more source

ParSets for parallelizing OODBMS traversals: implementation and performance

Proceedings of 3rd International Conference on Parallel and Distributed Information Systems, 2002
Describes the design and implementation of ParSets, a means of exploiting parallelism in the SHORE persistent object store. We used ParSets to create and parallelize the graph traversals of the OO7 OODBMS benchmark, and present speedup and scaleup results from parallel SHORE running these traversals on a cluster of commodity workstations connected by a
D.J. De Witt, J.F. Naughton, J.C. Shafer, S. Venkataraman   +3 more
openaire   +1 more source

Einsatz OODBMS in der Praxis: Ein Triathlon

1997
Die erste Disziplin des Triathlons ist das Schwimmen: Eine Evaluation der marktgangigen Produkte muss fur den praktischen Einsatz vorgenommen werden. Als Bewertungskriterien gelten Machtigkeit der Modellierung, Integration in die Entwicklungsumgebung, Unterstutzung der Schema-evolution, Sprachschnittstelle inkl.
Andreas Meier, Peter Bachmann, André Madörin, Philipp Nussbaum, Stefan Scherrer, Markus Stettier, Urs Tonazzi, Hanspeter Weber, Thomas Wüst   +8 more
openaire   +1 more source

Using the F2 OODBMS to support incremental knowledge acquisition

Proceedings International Database Engineering and Applications Symposium, 2003
Ripple down rules (RDR) is an incremental knowledge acquisition (KA) methodology, where a knowledge base (KB) is constructed as a collection of rules with exceptions. Nested ripple down rules (NRDR) is an extension of this methodology which allows the expert to enter her/his own domain concepts and later refine these concepts hierarchically.
L. Ai-Jadir, G. Beydoun
openaire   +1 more source

High Concurrency for Continuously Evolving OODBMS

2012
OODBMS is widely favored for mapping domains like CAD, with complex representation requirements. The transactions accessing OODBMS can be categorized into runtime transactions and design time transactions. Runtime transactions are meant for accessing data and design time transactions are meant for accessing schema. Parallel execution of transactions is
V. Geetha, N. Sreenath
openaire   +1 more source

Incremental inheritance model for an OODBMS

1997
The semantics of inheritance presented in this paper is based on the incremental modification mechanism that is formalized by the generator associated with class, modification function, and the building inheritance operators. The model is based upon an intuitive explanation of the proper use and purpose of inheritance, and is essentially dedicated to ...
Mohammed Benattou, Lotfi Lakhal
openaire   +1 more source

A new data abstraction layer required for OODBMS

Proceedings of the 1997 International Database Engineering and Applications Symposium (Cat. No.97TB100166), 2002
A 'class' in the object-oriented paradigm represents both interface and implementation of the class. However, interface and implementation of a class are needed for different purposes, since class interface is shared among most users, while class implementation is used only by the implementers of the class.
null Eun-Sun Cho, null Sang-Yong Han, null Hyoung-Joo Kim   +2 more
openaire   +1 more source

Visibility Issues in an active OODBMS

1996
We discuss the design and implementation of an active object-oriented database built upon Gemstone, and an associated debugger. We concentrate upon the issue of visibility of ‘wrapping’ code, explaining why it is desirable for users of our system to be able to access and debug the code in both its ‘raw’ form and with the wrapping code hidden.
Ian S. Thomas, Andrew C. Jones
openaire   +1 more source