Splice Machine this week announced it has open sourced its Spark-powered relational SQL database system. The company has set up a cloud-based sandbox for developers to put its new open source Splice Machine 2.0 Community Edition to the test. The company also announced the release of a cluster version and the launch of a developer community site. Splice Machine is a relational database management system, or RDBMS, designed for high-speed performance. The version 2.0 release integrates Apache Spark into its existing Hadoop-based architecture.