Data documentation ensures that your data will be understood and interpreted by any user. Data documentation should start at the beginning of a project and continue throughout. This will make data documentation easier and make it less likely that you will forget details later.
What's important to document?
Data documentation will ensure that your data will be understood and interpreted by any user. It will explain how your data was created, the context of the data, the structure of the data and its contents, and any manipulations that have been applied to the data.
Data Level Documentation