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Theory Pract. Object Syst.最新文献

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In the Trenches with ObjectStore 在ObjectStore的战壕中
Theory Pract. Object Syst. Pub Date : 1999-12-01 DOI: 10.1002/1096-9942(1999)5:4<201::AID-TAPO2>3.0.CO;2-6
D. M. Hansen, Daniel R. Adams, D. Gracio
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引用次数: 4
The Electronic Library Project: SGML Document Management System Based on ODBMS 电子图书馆项目:基于ODBMS的SGML文档管理系统
Theory Pract. Object Syst. Pub Date : 1999-12-01 DOI: 10.1002/1096-9942(1999)5:4<217::AID-TAPO4>3.0.CO;2-S
P. Futtersack, Didier Bolf
{"title":"The Electronic Library Project: SGML Document Management System Based on ODBMS","authors":"P. Futtersack, Didier Bolf","doi":"10.1002/1096-9942(1999)5:4<217::AID-TAPO4>3.0.CO;2-S","DOIUrl":"https://doi.org/10.1002/1096-9942(1999)5:4<217::AID-TAPO4>3.0.CO;2-S","url":null,"abstract":"","PeriodicalId":293061,"journal":{"name":"Theory Pract. Object Syst.","volume":"14 45","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114044523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
O2 and The ODMG Standard: Do They Match? O2和ODMG标准:它们匹配吗?
Theory Pract. Object Syst. Pub Date : 1999-12-01 DOI: 10.1002/1096-9942(1999)5:4<239::AID-TAPO6>3.0.CO;2-E
S. Alagic
{"title":"O2 and The ODMG Standard: Do They Match?","authors":"S. Alagic","doi":"10.1002/1096-9942(1999)5:4<239::AID-TAPO6>3.0.CO;2-E","DOIUrl":"https://doi.org/10.1002/1096-9942(1999)5:4<239::AID-TAPO6>3.0.CO;2-E","url":null,"abstract":"","PeriodicalId":293061,"journal":{"name":"Theory Pract. Object Syst.","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132917143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Object Management for a Visual Data Analysis Tool 对象管理的可视化数据分析工具
Theory Pract. Object Syst. Pub Date : 1999-12-01 DOI: 10.1002/1096-9942(1999)5:4<227::AID-TAPO5>3.3.CO;2-D
Makoto Onizuka, S. Isobe, Kyotaro Horiguchi
{"title":"Object Management for a Visual Data Analysis Tool","authors":"Makoto Onizuka, S. Isobe, Kyotaro Horiguchi","doi":"10.1002/1096-9942(1999)5:4<227::AID-TAPO5>3.3.CO;2-D","DOIUrl":"https://doi.org/10.1002/1096-9942(1999)5:4<227::AID-TAPO5>3.3.CO;2-D","url":null,"abstract":"This paper reports the advantages and disadvantages in applying an ODBMS (Object-oriented database management system) and an ORDBMS (Object relational database management system) to INFOVISER's object management scheme, a visual data analysis tool that we have been researching and developing. This paper also surveys a DBMS called LiteObject, which solves the main problems found in existing DBMSs, such as the complexity of implementing a versioning procedure and performance problems in loading a large number of instances. LiteObject offers version management based on constraints that exclude check in/out procedures from the application source code which decreases the degree of complexity. In addition, LiteObject offers a bulk loading interface to applications and manages several instances in one container. This reduces the amount of processing by removing identical steps in the process of inserting instances and adding instances to a collection type attribute. © 1999 John Wiley & Sons, Inc.","PeriodicalId":293061,"journal":{"name":"Theory Pract. Object Syst.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128660558","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Performance Study of Object Database Management Systems 对象数据库管理系统的性能研究
Theory Pract. Object Syst. Pub Date : 1999-12-01 DOI: 10.1002/1096-9942(1999)5:4<263::AID-TAPO8>3.0.CO;2-5
A. Chaudhri, J. Mccann, P. Osmon
{"title":"A Performance Study of Object Database Management Systems","authors":"A. Chaudhri, J. Mccann, P. Osmon","doi":"10.1002/1096-9942(1999)5:4<263::AID-TAPO8>3.0.CO;2-5","DOIUrl":"https://doi.org/10.1002/1096-9942(1999)5:4<263::AID-TAPO8>3.0.CO;2-5","url":null,"abstract":"Vendors of Object Database Management Systems (ODBMSs) have used a number of different architectural approaches for their products. Generally, most previously published ODBMS performance work focused on engineering applications and very little known about the suitability of ODBMS implementations for other application domains. In this paper, we redress this imbalance and evaluate three commercial products (two pure ODBMSs and one hybrid Object-Relational DBMS) to determine the suitability of each for six different application domains. Our results show statistically significant performance differences between the products under test. Furthermore, the hybrid product consistently performed badly on most of our tests. We also found that testing the scalability of products in terms of database size, as well as the choice of language interface, can be very important. Furthermore, the use of a dedicated database load utility can save considerable time when loading simple data, but generating complex data for the load utility requires considerable manual intervention. © 1999 John Wiley & Sons, Inc.","PeriodicalId":293061,"journal":{"name":"Theory Pract. Object Syst.","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124852071","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Building CORBA Applications with an Object Database System 用对象数据库系统构建CORBA应用程序
Theory Pract. Object Syst. Pub Date : 1999-12-01 DOI: 10.1002/1096-9942(1999)5:4<209::AID-TAPO3>3.3.CO;2-N
John C. Chen
{"title":"Building CORBA Applications with an Object Database System","authors":"John C. Chen","doi":"10.1002/1096-9942(1999)5:4<209::AID-TAPO3>3.3.CO;2-N","DOIUrl":"https://doi.org/10.1002/1096-9942(1999)5:4<209::AID-TAPO3>3.3.CO;2-N","url":null,"abstract":"","PeriodicalId":293061,"journal":{"name":"Theory Pract. Object Syst.","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127961146","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Data-intensive Intra- and Internet Applications based on Java, CORBA, and the World Wide Web 基于Java、CORBA和万维网的数据密集型内部和Internet应用程序
Theory Pract. Object Syst. Pub Date : 1999-08-23 DOI: 10.1002/(SICI)1096-9942(1999)5:3<181::AID-TAPO5>3.0.CO;2-C
Jürgen Sellentin, B. Mitschang
{"title":"Data-intensive Intra- and Internet Applications based on Java, CORBA, and the World Wide Web","authors":"Jürgen Sellentin, B. Mitschang","doi":"10.1002/(SICI)1096-9942(1999)5:3<181::AID-TAPO5>3.0.CO;2-C","DOIUrl":"https://doi.org/10.1002/(SICI)1096-9942(1999)5:3<181::AID-TAPO5>3.0.CO;2-C","url":null,"abstract":"Intra/Internet technology has become a key issue in the development of modern systems. Nowadays it is no longer sufficient to present static information pages through the WWW, instead we need interactive applications that may even compute complex results or process large data sets. In this paper, we describe a prototype based on Java and CORBA. Both represent modern concepts that have been developed to fulfill these requirements. Their combination results in the kind of data processing we want to apply to the WWW: First, portable, powerful, modular and even reusable client programs instead of cryptic HTML scripts, second, well-defined interfaces, and, third, efficient server processes separated from the WWW server and its CGI extensions. Communication is controlled by a fault tolerant CORBA layer, which also enables server development using a different language than Java. \u0000 \u0000 \u0000 \u0000In this paper, we focus on data-intensive applications, like, e.g., typical database applications and information systems, that are designed to run in Intra/Internet environments. Besides a discussion of CORBA and its data shipping capabilities, we take a closer look at Java and its runtime behavior. Finally, we report on the experiences gathered with our prototype system and its testbed application. Results measured within the last two years show that technology has already moved in the right direction, but performance is still a critical issue. The system described in this paper has also been used to gather experiences with and to influence the new language binding of the Standard Data Access Interface (SDAI) of the Standard for the Exchange of Product Data (STEP, ISO 10303) to Java. SDAI technology is extensively used in engineering applications and together with CORBA and WWW technology it provides the primitives to build on-line information systems, like catalogues or diagnostic systems. © 1999 John Wiley & Sons, Inc.","PeriodicalId":293061,"journal":{"name":"Theory Pract. Object Syst.","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124996056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
SEMCOG: A Hybrid Object-based Image and Video Database System and Its Modeling, Language, and Query Processing SEMCOG:一个基于对象的混合图像和视频数据库系统及其建模、语言和查询处理
Theory Pract. Object Syst. Pub Date : 1999-08-23 DOI: 10.1002/(SICI)1096-9942(1999)5:3<163::AID-TAPO4>3.3.CO;2-A
Wen-Syan Li, K. Candan
{"title":"SEMCOG: A Hybrid Object-based Image and Video Database System and Its Modeling, Language, and Query Processing","authors":"Wen-Syan Li, K. Candan","doi":"10.1002/(SICI)1096-9942(1999)5:3<163::AID-TAPO4>3.3.CO;2-A","DOIUrl":"https://doi.org/10.1002/(SICI)1096-9942(1999)5:3<163::AID-TAPO4>3.3.CO;2-A","url":null,"abstract":"","PeriodicalId":293061,"journal":{"name":"Theory Pract. Object Syst.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126343432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 12
Managing Historical Semistructured Data 管理历史半结构化数据
Theory Pract. Object Syst. Pub Date : 1999-08-23 DOI: 10.1002/(SICI)1096-9942(1999)5:3<143::AID-TAPO3>3.0.CO;2-S
S. Chawathe, S. Abiteboul, J. Widom
{"title":"Managing Historical Semistructured Data","authors":"S. Chawathe, S. Abiteboul, J. Widom","doi":"10.1002/(SICI)1096-9942(1999)5:3<143::AID-TAPO3>3.0.CO;2-S","DOIUrl":"https://doi.org/10.1002/(SICI)1096-9942(1999)5:3<143::AID-TAPO3>3.0.CO;2-S","url":null,"abstract":"Semistructured data may be irregular and incomplete and does not necessarily conform to a fixed schema. As with structured data, it is often desirable to maintain a history of changes to data, and to query over both the data and the changes. Representing and querying changes in semistructured data is more difficult than in structured data due to the irregularity and lack of schema. We present a model for representing changes in semistructured data and a language for querying over these changes. An important feature of our approach is that we represent and query changes directly as annotations on the affected data, instead of indirectly as the difference between database states. We describe the implementation of our model and query language. We present extensions that permit convenient snapshot-based access in our change-based data model. We also describe our design and implementation of a wind query subscription service that permits users to subscribe to changes in semistructured information sources. © 1999 John Wiley & Sons, Inc.","PeriodicalId":293061,"journal":{"name":"Theory Pract. Object Syst.","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123362117","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 86
Space and Time-Efficient Hashing of Garbage-Collected Objects 垃圾收集对象的空间和时间效率哈希
Theory Pract. Object Syst. Pub Date : 1999-04-01 DOI: 10.1002/(SICI)1096-9942(1999)5:2<119::AID-TAPO5>3.3.CO;2-H
Ole Agesen
{"title":"Space and Time-Efficient Hashing of Garbage-Collected Objects","authors":"Ole Agesen","doi":"10.1002/(SICI)1096-9942(1999)5:2<119::AID-TAPO5>3.3.CO;2-H","DOIUrl":"https://doi.org/10.1002/(SICI)1096-9942(1999)5:2<119::AID-TAPO5>3.3.CO;2-H","url":null,"abstract":"The hashCode() method found in the JavaTM programming language, and similar methods in other languages, map an arbitrary object to an integer value that is constant for the lifetime of the object. We review existing implementations of the hash operation, specifying the kinds of memory systems for which they work. Then we propose a new implementation of hashing for the hardest case: memory systems with compaction and direct pointers. Our proposal uses just two bits of space per object for the (majority of) objects that are never hashed. © 1999 John Wiley & Sons, Inc.","PeriodicalId":293061,"journal":{"name":"Theory Pract. Object Syst.","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124367855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
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