earticle

영어

The theory of structured techniques in the development of software has been used from the middle of 1970s to th 1980s. The purpose of this paper is to design a language for database programming. This paper presents a method to design and implement a recovery manager in object-oriented database systems. Data in object-oriented databases may be considered to be either short objects or the long objects that have their own different properties so that the system should provide two different recovery mechanisms to maximize the efficiency. To select the most appropriate recovery mechanism for each of the two objects, the advantages and disadvantages of the conventional recovery mechanisms are surveyed. Based on this, the paper suggests a logging mechanism for the short objects and a shadowing mechanism for the long objects.