Creating Additional Reference Data Views
RDM supports viewing data in alternative ways to that provided by tables, and the following artifacts can be created:
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Views - Provide users of the RDM web application with a logical subset of chosen tables. Views are composed of two or more tables joined into one record grouping. 
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Hierarchies - Allow users of the web application to view data based on parent-child relationships between tables. 
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Categories - Group related tables, views, and hierarchies into categories and subcategories. 
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Data Sets - Custom reports formed by querying the RDM repository with SQL. 
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