The queries that Data Lens calls to create data visualizations reference the source data from structured datasets. Datasets are created by importing files of CSV-delimited values, interpreted as columns defining data parameters and rows representing the data entries. You upload data to your Data Lens account, and your datasets can be selected as the source for as many visualization queries as required.
You can upload data directly from a file or by specifying a URL. It is also possible to upload data from an SFTP server. See Managing your Data for more information. Note that datasets must follow certain formatting rules; see Data Format Guidelines.