The most common way to value data is to enjoy three different files or documents, each of which has a slightly different view of data assets. The first file, called data summary, is a description or document that describes your data assets, highlighting their best quality and potential use, or a case study of practical use. The best strategy is to show it in person, or through dialogue when it is impossible. The second file is a comprehensive document called data directory, which summarizes all the facts about data assets. The last file is a sample data file that can help potential partners test your data. Concise, directories and sample files need to accurately and clearly represent the value of data.