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Many practical cases of database schema evolution require an effective support from configuration management. Although DBMS construction and software configuration management (SCM) constitute the well established areas of research, they are usually considered in separation from each other. In this paper different issues of SCM are summarized and their relevance to DBMS is investigated. We suggest...
It is often necessary to develop database applications with no prior knowledge of the structure of the database. Such applications may be referred to as generic applications, and often they can be required to manipulate multiple (possibly heterogenous) databases across a network. We explore the problems of developing generic applications for the current standard of object-oriented databases, and describe...
Query cost models are widely used, both for performance analysis and for comparing execution plans during query optimisation. In essence, a cost modelp redicts where time is being spent during query evaluation. Although many cost models have been proposed, for serial, parallel and distributed database systems, surprisingly few of these have been validated against real systems. This paper presents...
To be fully usable, digital multimedia contents should be supported by a set of tools to query them, and more generally to manipulate them. This is one of the major goals of an audio database management system (DBMS). Existing work, e.g., radio or television archives, generally tackles the signal processing aspects, often leaving the DBMS question open. In this paper, we lay the foundations for integrating...
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