List factor that need to be considered in query optimization

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Reference no: EM131876646

Problem

1. List three main features of mobile computing over wireless networks that are distinct from traditional distributed systems.

2. List three factors that need to be considered in query optimization for mobile computing that are not considered in traditional query optimizers.

3. Define a model of repeatedly broadcast data in which the broadcast medium is modeled as a virtual disk. Describe how access time and data-transfer rate for this virtual disk differ from the corresponding values for a typical hard disk.

Reference no: EM131876646

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