Relational databases and other tools are needed in addition to Hadoop technology to make Big Data analytics possible, according to Ken Rudin, director of analytics at Facebook. "There are a lot of commonly held beliefs about Big Data that need to be challenged," Rudin said at an industry conference. "The problem is that Hadoop is a technology, and Big Data isn't about technology. Big Data is about business needs. In reality, Big Data should include Hadoop and relational [databases] and any other technology that is suitable for the task at hand."

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