Mapping data elements in a user interface

A user interface can be used to associate data in a database. Data is presented in an assignment column, a first data element column, and a second data element column in the user interface, wherein the first and second data element columns show data elements stored in a database. First user input is received to select one or more data elements in the first data column. After receiving the first user input, the data assignment elements of the data assignment column are configured to correspond to the data elements of the second column Second user input is received in one or more of the data assignment elements indicating selection of one or more data elements of the second data column. The selected one or more data elements in the first data column are associated in the database with the selected one or more data elements in the second data column.