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Algebraic optimization of object-oriented query languages
1993
Theoretical Computer Science
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Kornatzky, Algebraic optimization of object-oriented query languages, Theoretical Computer Science 116 (1993) 59-94. ...
Declarative object-oriented query languages transfer the burden of choosing an efficient execution plan to the database query optimizer. ...
Acknowledgment Sophie Cluet and Patrick Valduriez have pointed out to us the usefulness of the transformation for converting deep filters to shallow filters. ...
doi:10.1016/0304-3975(93)90220-n
fatcat:qdvum2niibhh5bfbdlcxtld3kq
Query Optimization in OODBMS: Identifying Subquery for Query Management
2014
International Journal of Database Management Systems
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This paper is based on relatively newer approach for query optimization in object databases, which uses query decomposition and cached query results to improve execution a query. ...
Multiple experiments were performed to prove the productivity of this newer way of optimizing a query. ...
of many cached queries combined together.) in Query Optimization through Cached Queries for Object-Oriented Query Language SBQL The experimentation for optimization of query will be done based on queries ...
doi:10.5121/ijdms.2014.6204
fatcat:qn36ajpfqbfnzlmmsekzvnwgpy
Experiences building the open OODB query optimizer
1993
Proceedings of the 1993 ACM SIGMOD international conference on Management of data - SIGMOD '93
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To the best of our knowledge, it is the first working object query optimizer to be based on a complete extensible optimization framework including logical algebra, execution algorithms, property enforcers ...
Initial experiments on queries obtained from the object query optimization literature demonstrate that our optimizer is able to derive plans that are as efficient as, and often substantially more efficient ...
operator, we have been able to extend algebra-based query optimization to a wide variety of queries in object-oriented database systems. ...
doi:10.1145/170035.170080
dblp:conf/sigmod/BlakeleyMG93
fatcat:id76z3ctmjfabokmy4yijf5hbi
Experiences building the open OODB query optimizer
1993
SIGMOD record
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To the best of our knowledge, it is the first working object query optimizer to be based on a complete extensible optimization framework including logical algebra, execution algorithms, property enforcers ...
Initial experiments on queries obtained from the object query optimization literature demonstrate that our optimizer is able to derive plans that are as efficient as, and often substantially more efficient ...
operator, we have been able to extend algebra-based query optimization to a wide variety of queries in object-oriented database systems. ...
doi:10.1145/170036.170080
fatcat:fidz7fennnhi3izbm5czw33yoy
Using queries with multi-directional functions for numerical database applications
[chapter]
1998
Lecture Notes in Computer Science
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We show how to model multi-directional functions views containing matrix algebra operators, how to process queries to these views, and how to execute these queries in presence of late binding. ...
The object-oriented data model is well suited for managing the data complexity and representation needs of such applications. ...
The top level query algebra tree for the query in Fig. 7 The query optimizer translates the query into an optimized execution plan represented as an algebra tree (Fig. 9 ). ...
doi:10.1007/bfb0057717
fatcat:6xbo7mohpjbnrgpnntritevyfe
A general framework for the optimization of object-oriented queries
1992
Proceedings of the 1992 ACM SIGMOD international conference on Management of data - SIGMOD '92
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The goal of this work is to integrate in a general framework the dHferent query optimization techniques that have been proposed in the object-oriented context. ...
As a first step, we focus essentially on the logical aspect of query optimization. ...
This set of operators plus standard set operators can support most of the query languages for object-oriented databases. ...
doi:10.1145/130283.130341
dblp:conf/sigmod/CluetD92
fatcat:munqwia7qbgjxeqggxeaaras7i
A general framework for the optimization of object-oriented queries
1992
SIGMOD record
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A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2007; you can also visit the original URL.
The file type is application/pdf.
The goal of this work is to integrate in a general framework the dHferent query optimization techniques that have been proposed in the object-oriented context. ...
As a first step, we focus essentially on the logical aspect of query optimization. ...
This set of operators plus standard set operators can support most of the query languages for object-oriented databases. ...
doi:10.1145/141484.130341
fatcat:kehqz4ih45h7ffyzydvxewry7u
Object-Oriented Wrapper for Relational Databases in the Data Grid Architecture
[chapter]
2005
Lecture Notes in Computer Science
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In our solution we use the stack-based approach to query languages, its query language SBQL, updateable object-oriented virtual views and the query modification technique. ...
The paper presents a solution of the problem of wrapping relational databases to an object-oriented business model in the data grid architecture. ...
Section 3 shortly introduces the Stack-Based Approach (SBA) to object-oriented query languages, its query language SBQL and virtual updateable object-oriented views. ...
doi:10.1007/11575863_56
fatcat:dg3b3e6zinc4rgt2jcncvovqjy
An extensible query optimizer for an objectbase management system
1995
Proceedings of the fourth international conference on Information and knowledge management - CIKM '95
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Consistent with this philosophy, we model ever y component of the optimizer M a first-class object, providing ultimate extensibfity. ...
Since these systems are expected to serve data management needs of a wide range of application domains with possibly different query optimization requirements, extensibtity is essential. ...
The query model consist of a complete object calculus, an equivalent object algebra, and an SQL-like user language. The entire query model is defined in detail in [PLOS93b]. ...
doi:10.1145/221270.221566
dblp:conf/cikm/OzsuMS95
fatcat:no5zng4atzar7gr2e2thugzazy
Achievements and Weaknesses of Object-Oriented Databases
2003
Journal of Object Technology
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This paper serves as an overview on the achievements of object-oriented database technology so far, and also discusses the weaknesses that have to be yet resolved by the object-oriented database community ...
Object-oriented database systems began developing in the mid-80's out of a necessity to meet the requirements of applications beyond the data processing applications which were [are] served by relational ...
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
OFL
1995
Proceedings of the 1995 ACM SIGMOD international conference on Management of data - SIGMOD '95
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OFL is able to support any complex object algebra with recursion as macros. It is an appropriate target language for OQL-like query compilers. ...
Measures of a typical query extracted from a geographical benchmark show the value of hybrid strategies integrating pipelined and set-oriented evaluations. ...
The aim of OFL is to provide a unified and optimized execution support for the different object-oriented query languages currently developed. ...
doi:10.1145/223784.223791
dblp:conf/sigmod/GardarinMP95
fatcat:qhogh2hubzeplkk6t6l3otxo3m
An extensible query model and its languages for a uniform behavioral object management system
1993
Proceedings of the second international conference on Information and knowledge management - CIKM '93
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object algebra, an SQL-like ad hoc query language for user-level querying and proof of its completeness. ...
In this paper, we present an extensible, uniform, behavioral query model and its languages for the TIGUKAT object management system [POS92]. ...
Thus, it combines the power of the relational query languages with object-oriented features. ...
doi:10.1145/170088.170177
dblp:conf/cikm/PetersLOS93
fatcat:pgh3pq4vyzgubjrijcutx6ogwa
Representing Matrices Using Multi-Directional Foreign Functions
[chapter]
2004
The Functional Approach to Data Management
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Type inheritance and overloading requires the support for late binding of function calls in queries. ...
New application areas for database technology such as computer-aided design and analysis systems require a semantically rich data model, high performance, extensibility, and application oriented queries ...
The functional data model The functional data model of Amos II [22] and its query language AmosQL is based on DAPLEX [25] with object-oriented extensions. ...
doi:10.1007/978-3-662-05372-0_5
fatcat:xkuihfun75dwhc5w5hjz4ecske
Development of object-oriented database management system: OOIM
1994
Microprocessing and Microprogramming
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The philosophy behind these principles is to utilize existing relational technology in supporting a graph-based object-oriented query language. ...
This paper describes two focal issues: visual query optimization and concurrency control in designing OOIM, which is an object-oriented database management system being developed at KAIST. ...
INTRODUCTION A query language for object-oriented database management systems (OODBMSs) should express additional complexity which is avoided in relational DBMSs for simplicity and good mathematical foundation ...
doi:10.1016/0165-6074(94)90028-0
fatcat:kynua4kkq5d6zfhcmkax7bycf4
A Query Processing Approach for XML Database Systems
2005
Workshop Grundlagen von Datenbanken
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It includes a syntactic and semantic analyzation phase, the mapping onto an internal query representation, algebraic and cost-based optimization, and finally the execution on a record-oriented interface ...
Our contribution can be understood as a road-map that reveals a desirable set of functionalities for an XML query processor. ...
object-oriented DBS, to specifically tailored (native) storage formats. ...
dblp:conf/gvd/MathisH05
fatcat:klakfevugzepbgtcw6l4j4bcvu
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