Scientific publications

Вовченко А.Е., Крупа А.В.

Планирование запросов над множеством неоднородных распределенных информационных ресурсов в архитектуре средств поддержки предметных посредников

// Электронные библиотеки: перспективные методы и технологии, электронные коллекции: Труды XI Всероссийской научной конференции RCDL'2009. Петрозаводск: КарНЦ РАН, 2009. C. 335-342

Vovchenko A.E., Krupa A.V. Query planning over heterogeneous distributed information resources in the architecture of the subject mediators // Digital Libraries: Advanced Methods and Technologies, Digital Collections: Proceedings of the XI All-Russian Research Conference RCDL'2009. Petrozavodsk: KRC RAS, 2009. Pp. 335-342

Query planner plays one of the major roles in the architecture of subject mediators. Planner is responsible for decomposition and execution of the user query over a set of heterogeneous information resources. The decomposition problem in the mediator architecture implies a set of acceptable decisions, therefore one of the major tasks of the planner is the choice of the most effective one.
In the article the description of the planner which is able to effectively execute the queries formulated over information resources, containing large-scale sets of data (in comparison with the bandwidth of communication channels). Such queries usually require long time for execution. Also in the article the description of requirements to resource wrappers is presented. A wrapper architecture was developed to provide the planner with a possibility of construction of effective execution plans.

Query planning over heterogeneous distributed information resources in the architecture of the subject mediators (226 Kb, total downloads: 135)

Last modified: October 16, 2009