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The potential benefits of cloud computing are overwhelming. However, attaining these benefits requires that each aspect of the cloud platform support the key design principles of the cloud model. One of the core design principles is dynamic scalability, or the ability to provision and decommission servers on demand. Unfortunately, the majority of today's database servers are incapable of satisfying this requirement. This paper reviews the benefits of cloud computing and then evaluates two database architectures - shared-disk and shared-nothing - for their compatibility with cloud computing. Cloud computing is the latest evolution of Internet-based computing. The Internet provided a common infrastructure for applications. Soon, static web pages began to add interactivity. This was followed by hosted applications like Hotmail.
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