DataCommandr is a self-service tool created with a single mission: radically simplifying and democratizing all kinds of operations with data. By making data manipulations easier for non-IT users, DataCommandr dramatically shortens the total time for data integration, transformation and analysis. Data in DataCommandr is represented as tables and columns which are two main objects of the application. A table is a collection of data records. A column represents a property (also referred to as an attribute or field). Every element in the mash up - table or column - has some definition in terms of already existing elements. And the task of the user is to create appropriate definitions for tables and columns.