Rich Data Services offers SQL like functionality to query and tabulate data, combined with metadata search and retrieval. Selecting data can be done with traditional parameters but also includes innovative features such as the ability to use regular expressions or keywords/concepts to select variables, the option of performing on the fly recodes or computing new values, and paging to control the data flow. RDS also exposes a tabulate operation, which provides specialized parameters to easily and rapidly produce aggregated data or tables.
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