Proceedings 15th International Conference on Data Engineering (Cat. No.99CB36337)最新文献_第2页

Managing distributed memory to meet multiclass workload response time goals 管理分布式内存以满足多类工作负载响应时间目标

Proceedings 15th International Conference on Data Engineering (Cat. No.99CB36337) Pub Date : 1999-03-23 DOI: 10.1109/ICDE.1999.754903

Markus Sinnwell, A. König

引用次数: 9

Exploiting data lineage for parallel optimization in extensible DBMSs 利用数据沿袭在可扩展dbms中进行并行优化

Proceedings 15th International Conference on Data Engineering (Cat. No.99CB36337) Pub Date : 1999-03-23 DOI: 10.1109/ICDE.1999.754936

E. C. Shek, R. Muntz

引用次数: 1

The bulk index join: a generic approach to processing non-equijoins 大容量索引连接:处理非等量连接的通用方法

Proceedings 15th International Conference on Data Engineering (Cat. No.99CB36337) Pub Date : 1999-03-23 DOI: 10.1109/ICDE.1999.754937

Jochen Van den Bercken, B. Seeger, P. Widmayer

引用次数: 18

Query processing issues in image (multimedia) databases 图像(多媒体)数据库中的查询处理问题

Proceedings 15th International Conference on Data Engineering (Cat. No.99CB36337) Pub Date : 1999-03-23 DOI: 10.1109/ICDE.1999.754894

S. Nepal, M. Ramakrishna

{"title":"Query processing issues in image (multimedia) databases","authors":"S. Nepal, M. Ramakrishna","doi":"10.1109/ICDE.1999.754894","DOIUrl":"https://doi.org/10.1109/ICDE.1999.754894","url":null,"abstract":"Multimedia database systems are essential for the effective and efficient use of large collections of image data. The aim of such systems is to enable retrieval of images based on their contents. As part of our research in this area, we are building a prototype content-based image retrieval system called CHITRA. This uses a four-level data model, and we have defined a fuzzy object query language (FOQL) for this system. This system enables retrieval based on high-level concepts, such as \"retrieve images of mountains and sunset\". A problem faced in this system is the processing of complex queries such as \"retrieve all images that have a similar color histogram and a similar texture to the given example image\". Such problems have attracted research attention in recent times. R. Fagin (1996) has given an algorithm for processing such queries and provided a probabilistic upper bound for the complexity of the algorithm (which has been implemented in IBM's Garlic project). In this paper, we provide a theoretical (probabilistic) analysis of the expected cost of this algorithm. We propose a new multi-step query processing algorithm and prove that it performs better than Fagin's algorithm in all cases. Our algorithm requires fewer database accesses. We have evaluated both algorithms against an image database of 1000 images on our CHITRA system. We have used both color histogram and Gabor texture features. Our analysis is presented and the reported experimental results validate our algorithm (which has a significant performance improvement).","PeriodicalId":236128,"journal":{"name":"Proceedings 15th International Conference on Data Engineering (Cat. No.99CB36337)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123341660","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: 274

Policies in a resource manager of workflow systems: modeling, enforcement and management 工作流系统资源管理器中的策略:建模、实施和管理

Proceedings 15th International Conference on Data Engineering (Cat. No.99CB36337) Pub Date : 1999-03-23 DOI: 10.1109/ICDE.1999.754911

Yan-Nong Huang, M. Shan

{"title":"Policies in a resource manager of workflow systems: modeling, enforcement and management","authors":"Yan-Nong Huang, M. Shan","doi":"10.1109/ICDE.1999.754911","DOIUrl":"https://doi.org/10.1109/ICDE.1999.754911","url":null,"abstract":"Summary form only given. We are interested in Workflow Management Systems (WFMS), and particularly, in Resource Management (RM) of WFMS. A WFMS consists of coordinating executions of multiple activities, instructing who (resource) do what (activity) and when. The \"when\" part is taken care of by the workflow engine which orders the executions of activities based on a process definition. The \"who\" part is handled by the resource manager that aims at finding suitable resources at the run-time for the accomplishment of an activity as the engine steps through the process definition. Resources of different kinds (human and material, for example) constitute the information system of our interest, their management consists of resource modeling and effective allocation upon users' requests. Since resource allocation needs to follow certain general guidelines (authority, security, for example)-no matter who or what application issues requests: so those general guidelines are better considered as part of the resources' semantics. That is the reason why we are interested in resource policy management in RM. Resource policies are general guidelines every individual resource allocation must observe. They differ from process specific policies which are only applied to a particular process. The policy manager is a module within the resource manager, responsible for efficiently managing a (potentially large) set of policies and enforcing them in resource allocation. We propose to enforce policies by query rewriting.","PeriodicalId":236128,"journal":{"name":"Proceedings 15th International Conference on Data Engineering (Cat. No.99CB36337)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132367301","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: 46

Efficient theme and non-trivial repeating pattern discovering in music databases 音乐数据库中主题和重复模式的高效发现

Proceedings 15th International Conference on Data Engineering (Cat. No.99CB36337) Pub Date : 1999-03-23 DOI: 10.1109/ICDE.1999.754893

Chih-Chin Liu, Jia-Lien Hsu, Arbee L. P. Chen

引用次数: 82

Business objects and application integration 业务对象和应用程序集成

Proceedings 15th International Conference on Data Engineering (Cat. No.99CB36337) Pub Date : 1999-03-23 DOI: 10.1109/ICDE.1999.754900

S. Zeldin

引用次数: 1

A hypertext database for advanced sharing of distributed web pages 一个用于分布式网页高级共享的超文本数据库

Proceedings 15th International Conference on Data Engineering (Cat. No.99CB36337) Pub Date : 1999-03-23 DOI: 10.1109/ICDE.1999.754907

T. Yamakita, T. Fuji

引用次数: 4

Cooperative caching in append-only databases with hot spots 带热点的仅追加数据库中的协作缓存

Proceedings 15th International Conference on Data Engineering (Cat. No.99CB36337) Pub Date : 1999-03-23 DOI: 10.1109/ICDE.1999.754901

Aman Sinha, C. Chase, M. Cochinwala

引用次数: 0

Data warehouse maintenance under concurrent schema and data updates 并发模式和数据更新下的数据仓库维护

Proceedings 15th International Conference on Data Engineering (Cat. No.99CB36337) Pub Date : 1999-03-23 DOI: 10.1109/ICDE.1999.754933

Xin Zhang, Elke A. Rundensteiner

{"title":"Data warehouse maintenance under concurrent schema and data updates","authors":"Xin Zhang, Elke A. Rundensteiner","doi":"10.1109/ICDE.1999.754933","DOIUrl":"https://doi.org/10.1109/ICDE.1999.754933","url":null,"abstract":"Summary form only given. Data warehouses (DW) are built by gathering information from several information sources (IS) and integrating it into one repository customized to users' needs. ISs are typically owned by different information providers and hence are independent and autonomous. This implies they will update their data and schemas independently and without any concern for how this may affect the DW defined upon them. Hence, solutions for data warehouse maintenance are needed that can handle such IS updates. We have developed a first comprehensive solution that successfully tackles this problem (X. Zhang et al., 1998). In particular, to guarantee the correctness of concurrent view definition evolution and view extent maintenance of a data warehouse, we introduce a framework called the SDCC (Schema change and Data update Concurrency Control) system. SDCC integrates various algorithms designed to address different individual view maintenance subproblems into one system, such as algorithms for view extent maintenance after IS data updates, for view definition evolution after IS schema changes, and for view extent adaptation after view definition changes.","PeriodicalId":236128,"journal":{"name":"Proceedings 15th International Conference on Data Engineering (Cat. No.99CB36337)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125257929","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: 19