Fifth International Workshop on Research Issues in Data Engineering 10 On Processing Nested Queries
نویسندگان
چکیده
10 On Processing Nested Queries in Distributed Object-Oriented Database Systems Wang-Chien Lee Department of Computer and Information Science The Ohio State University Columbus, Ohio 43210-1277, USA [email protected], FAX: 614-292-2911 Dik Lun Lee* Department of Computer Science Hong Kong University of Science and Technology Clear Water Bay, Hong Kong [email protected], FAX: 614-292-2911 Abstract In this paper, we discuss nested query processing in a distributed object-oriented database system. We present three query processing strategies to exploit parallelism in a distributed environment. Then, we review three access methods designed for centralized systems and discuss how they can be applied to the distributed environment. Heuristics for selecting attributes for indexing and determining where to store the indexes are also presented. Finally, a replication strategy is proposed for the path dictionary method.
منابع مشابه
The Fifth International VLDB Workshop
In the research area of spatial databases, query processing based on uncertain location information has become an important research topic. In this paper, we propose an index structure for the case that the locations of a query object and target objects are imprecise and specified by Gaussian distributions with different parameters. The index structure efficiently supports probabilistic spatial...
متن کاملA Solution to View Management to Build a Data Warehouse
Several techniques exist to select and materialize a proper set of data in a suitable structure that manage the queries submitted to the online analytical processing systems. These techniques are called view management techniques, which consist of three research areas: 1) view selection to materialize, 2) query processing and rewriting using the materialized views, and 3) maintaining materializ...
متن کاملReport of the Fifth International Workshop on Object-Oriented Reengineering
This paper reports on the results of the Fifth International Workshop on Object-Oriented Reengineering in Oslo on June 15, 2004. It enumerates the presentations made, classifies the contributions and lists the main results of the discussions held at the workshop. As such it provides the context for future workshops around this topic. 1 Objectives of the Workshop The workshop on Object-Oriented ...
متن کاملFifth International Workshop on System Quality and Maintainability
The fifth international workshop on Software Quality and Maintainability (SQM 2011) offered a forum to researchers to present their original work and to practitioners to relate their experiences on issues pertaining to software quality and maintainability. Moreover, the theme of the workshop invited discussion on how to bridge the gap between end user expectations, business requirements, vendor...
متن کاملImprovement of the Analytical Queries Response Time in Real-Time Data Warehouse using Materialized Views Concatenation
A real-time data warehouse is a collection of recent and hierarchical data that is used for managers’ decision-making by creating online analytical queries. The volume of data collected from data sources and entered into the real-time data warehouse is constantly increasing. Moreover, as the volume of input data to the real time data warehouse increases, the interference between online loading ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 1995