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neelam

Java JDBC
1 Answer(s) 2 years and 8 months ago
Posted in : Java Interview Questions

What is the advantage of denormalization?

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October 18, 2010 at 5:22 PM

Hi,

De-normalization is a concept used for fast data retrieval as it reduces the number of joins to be performed in the select query. this is the process of taking a normalized database and deliberately introducing redundancies to improve query writing, performance and correctness.

Data denormalization is reverse procedure, carried out purely for reasons of improving performance. It maybe efficient for a high-throughput system to replicate data for certain data.

Thanks.

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