By F. Cesarini, S. Salza

This e-book is concentrated at the functionality review of database machines, i.e., special-purpose architectures in particular intended to enhance the potency of database functions. the subject is of fundamental curiosity as a result have to evaluate those platforms between themselves and with conventional database administration structures. The booklet gathers the event of a number of ecu learn teams in modeling and studying the database desktop architectures they've got proposed. It offers either with the most methodological matters and with the specific research of a few suitable difficulties. it's also an intensive annotated bibliography with a couple of hundred references and several other keys for the entry to the literature.

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Extra resources for Database Machine Performance: Modeling Methodologies and Evaluation Strategies

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855-862. H. J. H. Swain: for E v a l u a t i n g A l g o r i t h m s Software E n g i n e e r i n g , Performance for S I M D M a c h i n e s , Vol. SE-8, n. 4, July Measures IEEE Trans. on 1982, pp. 319- 331. Weber: Evaluation On Model a for Proc. of 3rd Int. W o r k s h o p Springer-Verlag, 1983, pp. 46- 73. Velardi: Architecture, Database M a c h i n e s , ProC. Munich, Performance of 3rd Int. Springer-Verlag, Modelling Workshop of on 1983, pp. 74-90 (also reprinted in this volume as chapter 7).

Becoming clear, and priate is and more details are available about the architecture the software, precise As its structure models should incorporate the details to give more estimates. Therefore simulation techniques are more appro- in these phases because of their greater generality and flexi- bility. Actual operational. measures Therefore phases of the project, can be carried out only when the this approach becomes important in system the is last to help in tuning the system, and in selecting the appropriate configuration.

Some situations networks, for constraints, system ess, cannot be m o d e l e d c o n v e n i e n t l y i n s t a n c e state d e p e n d e n t r o u t i n g and that i n t r o d u c e b l o c k i n g phenomena. g. the proc- a m a r k o v i a n renewal process. Performance Two indexes main classes of indexes are u s u a l l y considered in these models. The first Typical one m e a s u r e s how the system resources indexes are the resource u t i l i z a t i o n s are exploited. and the throughput, that e x p r e s s the amount of w o r k the s y s t e m is a c t u a l l y doing.

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