Abstract: In an example, columns in a data table may be categorized according to a data type based upon an analysis of data elements contained in each column with a grammar file. The data type of a column be may be categorized as one of a general data type and a specific data type. In addition, the grammar file may be expanded by at least one of adding a data element to the grammar file in response to a column being categorized as a specific data type and inserting a new data type to the grammar file in response to a column being categorized as a general data type.

Abstract: Data entries can include values for each of a number of features that each have a number of permissible or possible values. The features and the permissible values thereof are ranked based on a graph constructed from the features and the permissible values. The data entries can include textual data for free-text features that do not have permissible values or possible values, and new features created based on information extracted from the textual data, where nodes and edges are added to the graph from these new features. Graphical elements corresponding to the features and graphical representations based on frequencies of the permissible values of the features can be displayed.

Abstract: In an example, columns in a data table may be categorized according to a data type based upon an analysis of data elements contained in each column with a grammar file. The data type of a column be may be categorized as one of a general data type and a specific data type. In addition, the grammar file may be expanded by at least one of adding a data element to the grammar file in response to a column being categorized as a specific data type and inserting a new data type to the grammar file in response to a column being categorized as a general data type.