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Describe the fundamental idea underlying the Apache Hadoop Framework.
How are the elements of a 2D array are stored in the memory?
What is a unique constraint? How is it different from a primary key?
What are the differences between an operational database and a data warehouse?
What is the difference between SQL and PL/SQL?
Which two messages does NameNode get from DataNode?
List the standard port numbers on which Hadoop’s task tracker, NameNode, and job tracker operate.
Mention some of Hadoop’s key attributes.
What is the difference between SQL and T-SQL?
As a data engineer, how would you go about creating a new analytical product?
What Do you know about Absolute XPath and Relative XPath?
What is a queue? What difference between queue and stack?