Query Execution and Maintenance Costs in a Dynamic Distributed Federated Database

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Provided by: International Technology Alliance Collaboration System (ITACS)
Topic: Big Data
Format: PDF
The cost of query evaluation in a Dynamic Distributed Federated Databases (DDFD) depends on the topology connecting the database nodes together. Different topologies provide opportunities to adopt a variety of query optimization strategies and topology also influences the efficiency of these strategies. The authors describe a number of strategies to optimize join queries and then derive cost estimation formulae. They use these to visualize and explore the performance of join queries in different distributed topologies.
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