Described herein are technologies pertaining to automatically summarizing contents of a dataset and visualizing a summary of the dataset together with summaries of other datasets. A schema that defines the structure and content of a dataset is received, and pre-processing is undertaken on the schema to generate an enriched schema. Portions of the enriched schema are selected to generate a semantic summary of the schema, which is included with at least one exemplary entry of the dataset to generate a summary of the dataset.