Apache Sqoop is a connectivity tool to perform data transfer between Hadoop and traditional databases (RDBMS) which contains structured data. Using sqoop, one can import data to Hadoop Distributed File System from RDBMS likeOracle, Teradata, MySQL, etc… and also export the data from Hadoop to any RDBMS in form of CSV file or direct export to databases.

There is a possibility of writing mapreduce programs that would use jdbc connectors…