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Great Learning Academy provides this Hive Basics course for free online. The course is self-paced and helps you understand various topics that fall under the subject with solved problems and demonstrated examples. The course is carefully designed, keeping in mind to cater to both beginners and professionals, and is delivered by subject experts. Great Learning is a global ed-tech platform dedicated to developing competent professionals. Great Learning Academy is an initiative by Great Learning that offers in-demand free online courses to help people advance in their jobs. More than 5 million learners from 140 countries have benefited from Great Learning Academy's free online courses with certificates. It is a one-stop place for all of a learner's goals.

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If you are a beginner to Apache Hive, then you will have to start with understanding queries; being able to write structured queries is the fundamental requirement in Apache Hive. You will also have to understand database concepts in SQL, Linux, Hadoop file systems, and Java. With these concepts well understood, you will be able to crack Hive well. 

Hive commands are data warehouse infrastructure tools built on top of Hadoop to define Big Data. They are also called schema on reading. It verifies the data when the query is issued,and not when it is loaded. Different Hive commands are Data Definition Language (DDL), Data Manipulation Language (DML), Grouping, and Joins.  

If you are new to database concepts in SQL, Linux, Hadoop file systems and Java, then it will take a while to learn Apache Hive, or otherwise, it is straightforward and easy to learn the tool.  

Apache Hive gives an SQL dialect called HiveQL (Hive Query Language or HQL), which is used to query data stored in Hadoop clusters. However, SQL knowledge proves helpful; it is a practical, intuitive model used to organize and use data.

Hive and Spark are both popular tools used in big data. Hive is, however, considered the better choice to perform data analysis on vast amounts of data using SQL. Spark is a tool that is best used for running big data analytics, providing a faster, modern alternative to MapReduce.