Remove 2005 Remove Data Security Remove Non-relational Database Remove Relational Database
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20 Best Open Source Big Data Projects to Contribute on GitHub

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DataFrames are used by Spark SQL to accommodate structured and semi-structured data. You can also access data through non-relational databases such as Apache Cassandra, Apache HBase, Apache Hive, and others like the Hadoop Distributed File System. Apache CouchDB Source: idroot.us Erlang is used to create CouchDB.