An Architecture for Modular On-Line Analytical Processing Systems: Supporting Distributed and Parallel Query Processing Using Cooperating CORBA Objects
نویسندگان
چکیده
During the last few years, On-Line Analytical Processing (OLAP) has emerged as a valuable tool for the analysis, navigation and reporting of hierarchically organized data from data warehouses. Still, it remains a challenging task to implement and deploy an OLAP system, since no standardized architecture exists, which describes the common components and functionality of OLAP systems. Additionally, the formal models in use disregard the need for easily implemented and clearly defined interfaces between these components. This paper presents a model for OLAP engines, which permits the development of modular systems based on a simple data-representation using sets and vectors. The functional units of the query processor are implemented in CORBA as independent modules with firm interfaces and exchange data and messages communicate across a software bus.
منابع مشابه
A Modular Design for Geo-Distributed Querying
Most distributed storage systems provide limited abilities for querying data by attributes other than their primary keys. Supporting efficient search on secondary attributes is challenging as applications pose varying requirements to query processing systems, and no single system design can be suitable for all needs. In this paper, we show how to overcome these challenges in order to extend dis...
متن کاملDistributed Light-Weight Persistence in Java - A Tour on RMI- and CORBA-Based Solutions
Java has potential to support the development of distributed and autonomous though collaborating components in a network computing environment. To provide for the flow of objects between these components some kind of distributed shared memory is needed. So far, Java offers distributed shared memory aka distributed persistence by employing database systems. However, since the main features of da...
متن کاملJonathan: an open distributed processing environment in Java
This paper describes a minimal and modular Object Request Broker (ORB) framework from which it is possible to build highly flexible ORBs supporting the introduction of arbitrary binding mechanisms between interacting objects. We show that such a framework consists essentially of extending the Java notion of object reference to make it distributed. Jonathan is a Java implementation of such a fra...
متن کاملModular Adaptive Query Processing for Service-Based Gridsa
Distributed and heterogeneous environments present significant challenges to complex software systems, which must operate in the context of continuously changing loads, with partial or out-of-date information on resource capabilities. A distributed query processor (DQP) can be used to access and integrate data from distributed sources, as well as for combining data access with data analysis. Ho...
متن کاملScalable Distributed Query Processing in Parallel Main-Memory Database Systems
The continuous increase in compute speed and main-memory capacity of modern servers triggered the development of a new generation of in-memory database systems. These systems completely rewrote the traditional database architecture to use main memory as primary storage. Discarding several now obsolete abstractions of disk-based database systems enabled unprecedented query performance on a singl...
متن کامل