CODAR: A POA-Based CORBA Database Adapter for Web Service Infrastructures

CODAR: A POA-Based CORBA Database Adapter for Web Service Infrastructures

Zahir Tari (RMIT University, Australia), Abdelkamel Tari (University of Bejaia, Algeria) and Surya Setiawan (RMIT University, Australia)
Source Title: Web-Powered Databases
Copyright: © 2003 |Pages: 32
DOI: 10.4018/978-1-59140-035-6.ch010


Connecting heterogeneous databases through the World Wide Web (WWW) is crucial for most business organizations. The underlying complex problem is the handling of heterogeneity and communication between different data repositories (or database systems). Such interoperability is crucial as it enables the integration of business processes across different business organizations, and therefore becomes a key issue within the new generation of Web-based business applications (called Web Services). CORBA (Common Object Request Broker Architecture) provides protocols and components that allow interoperability between different software platforms (Tari & Bukhres, 2001), such as C++ and Java. However, CORBA does not deal with WWW-based interoperability. In this paper we propose an extension of one of the core elements of CORBA, called Portable Object Adapter (POA), to deal with persistency of business information. The proposed extension, called CODAR, manages the whole life cycle of persistent objects, including activation, deactivation, instantiation, and deletion. At the end of this paper we describe an extension of CODAR to deal with performance by including advanced caching and prefetching techniques.

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