In this section, you will import sample project and resource data into the Force.com database using the Data Loader tool. This process is divided into three stages: preparing the data, importing it, and then verifying it visually using the native user interface. This is certainly not the only way to import data into Force.com, and probably not the easiest. But it employs a free, widely used, fully supported tool from Salesforce that can scale up to support large numbers of records and complex objects.
Data Loader operates on CSV files. The first line of the file contains a header listing the columns present in the data. The following lines are the body of the data, with each line a record, values separated by ...