Fragmentation and allocation algorithm in the distributed object-oriented database: case of simple attributes and simples method

Abstract

Nowdays, information systems are often built based on the object-oriented Architecture and distributed in the network, they consist of many diverse nonhomogeneous computational basis. In such environments, the systems with distributed object-oriented database provide a reliable and effective mechanism to organize data storage and handle inquữes to very large- volume of different objects. With the fundamental characteristics of object orientation such as encapsulation, inheritance, class hierarchy, the design aspect in the distributed object-oriented database appears more complicated matters than the normal design approach in the relationship database. The design in distributed object-oriented database has two phases; Class Fragmentation and Class Allocation. Class Fragmentation and Allocation aim to improve the system perfonnance. The two phases are normally executed in the sequence mode, only when the fragmentation is complete the allocation starts. However, this paper presents an algorithm of which the fragmentation and allocation phases are executed simultaneously in the distributed object-oriented database, in case simple attributes and simple methods.