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Achievements and Weaknesses of Object-Oriented Databases

Sikha Bagui
2003 Journal of Object Technology  
Minimal query optimization One of the biggest problems in OODBs is the optimization of declarative queries.  ...  Lack of standard query algebra Lack of query algebra standards is another major weakness of OODBs. This also impairs query optimization.  ... 
doi:10.5381/jot.2003.2.4.c2 fatcat:wk265lulkvfhdjdy7lvh4bbvfu

An Algebra For Protein Structure Data

Yanchao Wang, Rajshekhar Sunderraman
2009 Zenodo  
This paper presents an algebraic approach to optimize queries in domain-specific database management system for protein structure data.  ...  The paper also presents a query translator that converts high-level query specifications in algebra into low-level query specifications in Protein-QL, a query language designed to query protein structure  ...  Protein Algebra Optimization The Protein Algebra provides query optimization for large database and complex queries to provide system much better performance.  ... 
doi:10.5281/zenodo.1061435 fatcat:pr7ucmk3ifgxrgyjzxxw2gnery

Efficient Use of Signatures in Object-Oriented Database Systems [chapter]

Kjetil Nørväg
1999 Lecture Notes in Computer Science  
The signatures of the objects can be stored separately from the objects themselves, and can later be used to filter out candidate objects during perfect match queries.  ...  In an object-oriented database system (OODB) using logical OIDs, an object identifier index (OIDX) is needed to map from logical OID to the physical location of the object.  ...  Optimal signature size is very dependent of data and query types.  ... 
doi:10.1007/3-540-48252-0_27 fatcat:2zdwchjovvc23mgouelekov4q4

Object-oriented databases: design and implementation

J.V. Joseph, S.M. Thatte, C.W. Thompson, D.L. Wells
1991 Proceedings of the IEEE  
The paper presents key features of OODB's, pro1,ides a taronomy of approaches to OODB 's, and discusses key OODB urchitecturul and implementation issues, design alternatives, and tradeoffs.  ...  of a variety of OODB systems, both research prototypes and commercial systems. Finally, it discusses industr? efforts to uccelerute a comerisus that can lead to standards in the OODB area.  ...  Many of the ideas presented in this paper came out of discussions with the Zeitgeist OODB project members, as well as feedback received from Zeitgeist users within Texas Instruments.  ... 
doi:10.1109/5.64382 fatcat:i25xxjqpyjfihemxkuimzkejjm

Architecture of an open object-oriented database management system

D.L. Wells, J.A. Blakeley, C.W. Thompson
1992 Computer  
Development of OODBs has been slow because OODB developers and researchers must construct an entire OODB from scratch rather than reuse standardized components.  ...  This article describes the architecture of the Open OODB system.  ...  For example, we can bind C++ with an SQLlike extension called OQLIC++].X The object query module architecture is open with respect to extensions to the query language. optimization. and execution."  ... 
doi:10.1109/2.161282 fatcat:5gzneke6x5arhgzpxq6pyjivce

Of Objects and Databases: A Decade of Turmoil

Michael J. Carey, David J. DeWitt
1996 Very Large Data Bases Conference  
Driven by the perception that managing traditional business data was largely a solved problem, projects were investigating ideas such as adding abstract data types to relational databases and building  ...  provided a query optimizer generator for generating an optimizer for a domain-appropriate query language from a rule-based language specification.  ...  language (SQL) and its models for query optimization and execution.  ... 
dblp:conf/vldb/CareyD96 fatcat:gcfczcewszhebhqhtunasxcvpa

Object-Based Storage Model for Object-Oriented Database [chapter]

Zhongmin Li, Zhanwu Yu
2007 Lecture Notes in Computer Science  
In the first glance at using OBSD in OODB, we explore the methods to map OODM to OBSM including direct mapping, mapping clustering to collection and declustering a large object to a series of sub-objects  ...  Furthermore, the storage subsystem of OODB has to organize the objects in the pages, which is not well-suited to the objects storage.  ...  However, compared with DSM, PAX doesn't optimize the I/O between disk and memory.  ... 
doi:10.1007/978-3-540-74784-0_36 fatcat:z7tmjvo5c5e4lizr3ziq57eagy

An extension of path expressions to simplify navigation in object-oriented queries [chapter]

Jan Bussche, Gottfried Vossen
1993 Lecture Notes in Computer Science  
The semantics of our mechanism is given in the general framework of a calculus-like query language. Techniques from semantic query optimization are employed to obtain e cient speci cations.  ...  Hence, instances over the OODB schema can simply be introduced as  ...  It turns out that the query simpli cations just illustrated can be automated, using techniques known from semantic query optimization. 7] describes a powerful optimization algorithm which takes as input  ... 
doi:10.1007/3-540-57530-8_17 fatcat:wmbd6adp4rc4nag6lqbyazwbqi

An object-oriented approach for image processing and semantic query based on content

Eugen Ganea, Marius Brezovan
2009 2009 International Multiconference on Computer Science and Information Technology  
The object oriented native query system is used for the retrieval of the images from the database.  ...  The pseudo-natural query considered is: yellow large f lower Using the data from the ontology we translate this query in equivalent object oriented native query: CImage im ag eQu er y = new CImage ( "  ...  Because we create the indexes on a large number of objects we choice to store objects with indexing off. Then we set the indexes using the template presented above and reopen the OODB again.  ... 
doi:10.1109/imcsit.2009.5352800 dblp:conf/imcsit/GaneaB09 fatcat:ls2exchlhndp7oftnrmvxzfqau

An Object Oriented Graph Approach for Image Representation and Query Based on Content

Eugen Ganea, Marius Brezovan
2010 International Journal of Computer Science and Applications  
The object-oriented native query system is used for the retrieval of the images from the database.  ...  This mode is used also in the case of query-by-example the OODB is used.  ...  This approach drives at a good optimization of the retrieval process for the linking an image to a synset.  ... 
dblp:journals/ijcsa/GaneaB10 fatcat:mo7rtkbqwbbnddia2d47sivj6m

Data processing and optimization system to study prospective interstate power interconnections

Sergei Podkovalnikov, Ivan Trofimov, Leonid Trofimov, N.I. Voropai
2018 E3S Web of Conferences  
The technologies for building and integrating a Data processing and optimization system including an object-oriented database and a predictive mathematical model for optimizing the expansion of electric  ...  The paper presents Data processing and optimization system for studying and making rational decisions on the formation of interstate electric power interconnections, with aim to increasing effectiveness  ...  A new form of information presentation is proposed for more convenient comparison of different solutions of the optimization model using graphical visualization.  ... 
doi:10.1051/e3sconf/20182701007 fatcat:ss4yuhh7yjcyvmeyq5lafgfvpu

A Retrospection On Niche Database Technologies

Won Kim
2003 Journal of Object Technology  
language, query optimization and processing, transaction management, etc.  ...  Performance techniques that have been incorporated into RDBs include access methods, query optimization based on cost estimation, process architectures, optimized transaction management, parameterized  ... 
doi:10.5381/jot.2003.2.2.c4 fatcat:asgb7afk7bgm5iyac2zp5nt44m

Query unnesting in object-oriented databases

Leonidas Fegaras
1998 Proceedings of the 1998 ACM SIGMOD international conference on Management of data - SIGMOD '98  
There is already a sizable body of proposals on OODB query optimization.  ...  The simplicity of the system is due to the use of the monoid comprehension calculus as an intermediate form for OODB queries.  ...  OPTL is a language for specifying query optimizers that captures a large portion of the optimizer specification information in a declarative manner.  ... 
doi:10.1145/276304.276310 dblp:conf/sigmod/Fegaras98 fatcat:7ippz6opy5adlpjv5spybhvyom

Query unnesting in object-oriented databases

Leonidas Fegaras
1998 SIGMOD record  
There is already a sizable body of proposals on OODB query optimization.  ...  The simplicity of the system is due to the use of the monoid comprehension calculus as an intermediate form for OODB queries.  ...  OPTL is a language for specifying query optimizers that captures a large portion of the optimizer specification information in a declarative manner.  ... 
doi:10.1145/276305.276310 fatcat:r2svf3u4ajf63p4qwamtj3zpwq

The computing and information system for research of prospective electric power grids expansion

Ivan Trofimov, Leonid Trofimov, Sergei Podkovalnikov, Lyudmila Chudinova, Lev Belyaev, Vladimir Savelév
2019 Yugoslav Journal of Operations Research  
Besides, this tool is incorporated within a mathematical model for optimization of expansion and operating modes of power systems.  ...  Further processing the data from the OODB is performed through a special query designer.  ...  The system is tailored for complex, large-scale modeling applications and allows users to build large maintainable models that can be adapted to new situations. 3 The ORIRES model is an optimization,  ... 
doi:10.2298/yjor181115021t fatcat:ggn5lohuuzat5k4cbq323ytcju
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