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100+ Big Data Interview Questions and Answers 2023

ProjectPro

JANUARY 31, 2023

MapReduce is a Hadoop framework used for processing large datasets. Another name for it is a programming model that enables us to process big datasets across computer clusters. This program allows for distributed data storage, simplifying complex processing and vast amounts of data. What is MapReduce in Hadoop?

Big Data 52
Big Data Hadoop AWS Relational Database 52
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Data Virtualization: Process, Components, Benefits, and Available Tools

AltexSoft

NOVEMBER 23, 2021

Query optimization — to improve query processing performance by caching virtual entities, enabling automatic joins, and supporting push-down querying (pushing down request operation to the source database). Data quality control — to ensure that all information is correct by applying data validation logic.

Process 69
Process Data Lake Metadata Data Warehouse 69
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