The namespace Dataset is the entry point to all objects related with the Datasets module.

The Dataset.DB object lists all configured database connections and its runtime properties

The Dataset.Table object lists all configured tables and their runtime properties

The Dataset.Query object lists the defined queries and their runtime properties.

The Dataset.File object lists the defined queries and their runtime properties.

See http://www.tatsoft.com/help/fs-2014/runtime/index.html for the complete programming reference on runtime objects.