What is the difference between von Neumann architecture and Harvard architecture
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If a table contains duplicate rows, will a query display duplicate values by default? How can you eliminate duplicate rows from a query result?
What is a unique constraint? How is it different from a primary key?
What’s the difference between a view and a materialized view?
What is the purpose of the BETWEEN keyword?
What are the different DML commands in SQL? Give a description of their purpose.
What are the different DDL commands in SQL? Give a description of their purpose.
What is the difference between SQL and T-SQL?
What is the difference between SQL and PL/SQL?
What is the difference between SQL, Oracle, MySQL, and SQL Server?
Mention some of Hadoop’s key attributes.
Describe the fundamental idea underlying the Apache Hadoop Framework.
Which two messages does NameNode get from DataNode?
As a data engineer, how would you go about creating a new analytical product?
Differentiate between a data engineer and data scientist.
What are the differences between an operational database and a data warehouse?
Can you create more than one table in Hive for the same data file?
Describe the purpose of the .hiverc file in Hive.
Describe how Hive is used in the Hadoop ecosystem.