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D.R.E - Distributed Rules Engine is a powerful, horizontally scalable, inference based Business Rules Engine for big data processing with ability to run on Spark, Hadoop, Amazon EMR, Azure HDInsight and GCE. The Rules are composed through an easy to read when ... then semantics understandable by business users.

The Business Rule Engine is an add-on capability of CDAP right next to the CDAP Pipelines. It enables users to see, understand, edit and manage the business rules in their data processing pipelines without writing any code.

A Business Rule is a statement that describes a business policy or procedure to process data. Actions describe the sequence of operations that are associated with data when a business rule is fired.