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Learn Hive from best Institutes in Howrah. Hive was developed by Facebook initially which was later took over by the Apache Software Foundation. It was developed further as an open source under the name Apache Hive. It is used by different companies. For example, Amazon uses it in Amazon Elastic Map Reduce on Amazon Web Services.
Hive provides an SQL-like interface to query data stored in various databases and file systems that integrate with Hadoop. Hive provides the necessary SQL abstraction to integrate SQL-like queries (HiveQL) into the underlying Java without the need to implement queries in the low-level Java API as in traditional SQL queries.
Hive is not a relational database. It is neither a design for OLTP nor a language for real-time queries and row-level updates.
Hive aids portability of SQL-based applications to Hadoop. It is designed for OLAP and is familiar, fast, scalable, and extensible.
The Hive architecture comprises of the following main components such as User Intereface, Meta Store, HiveQL Process Engine, Execution Engine and HDFS or HBASE. Data Summarization, Querying and Analysis are the three main operations of Hive.
Hive supports text files, sequence files (flat files consisting of binary key/value pairs) and RC Files (Record Columnar Files which store columns of a table in database).

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