Studia Informatica


Volume: 1-2(18)
Year: 2014
Publishing: Publishing House of University of Natural Science
Scientific Editor: Wojciech Penczek,
Review Board: PDF File
ISSN: 1731-2264

Contents

Barczak A., Zacharczuk D., Pluta D.,
Tools and methods for optimization of databases in Oracle 10g. Part 2 – Tuning of hardware, applications and SQL queries
pp. 5-22
Abstract: Article provides information on effective optimizing of Oracle. Discussed aspects are: hardware and statistics tools on which one can build the optimal SQL code.
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Barczak A., Zacharczuk D., Pluta D.,
Tools and methods for optimization of databases in Oracle 10g. Part 3 – theory in practice
pp. 23-36
Abstract: The article base on knowledge from earlier two parts. It shows how to effectively use the knowledge about database optimization methods, and how to verify and confirm the validity of the decisions in the process.
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Kuzmina A., Trusz M.,
Generalized hyperbolic processes autocovariance functions
pp. 37-46
Abstract: Generalized hyperbolic processes are Levy processes which allow an almost perfect fit to financial data. Autocovariance functions of generalized hyperbolic processes such as the normal inverse Gaussian process, the variance gamma process and the hyperbolic process are deduced at this paper.
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Wesołowski Z.,
Estimating Reliability Characteristics for Homogeneous and Heterogeneous Systems
pp. 47-59
Abstract: The paper presents a method for estimating reliability characteristics dedicated for two important kinds of systems, i.e. homogeneous systems and heterogeneous systems. We propose an algorithm for evaluating these characteristics on the basis of observations. The paper gives examples of applications of the method for evaluating the reliability of a distributed system.
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