This article reports on a study that demonstrates the weak points found in major relational database engines that wereset up in a Cloud Computing environment, in which the nodes were geographically distant. The study undertook to establishwhether running databases in the Cloud provided operational disadvantages. Findings indicate that performance measuresof RDBMS’ in a Cloud Computing environment are inconsistent and that a contributing factor to poor performance is thepublic or shared infrastructure on the Internet. Also that RDBMS’ in a Cloud Computing environment become network-boundin addition to being I/O bound. The study concludes that Cloud Computing creates an environment that negatively impactsRDBMS performance in comparison to the n-tier architecture for which common RDBMS’ were designed.
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