The data plan also needs to cover issues such as ownership of compiled data. Although it is a metadatabase, it might be necessary to have different types of options for access and use, and to establish some kind of agreement and different levels of logins, depending on metadata stored. The data plan needs to include a strategy for the use of data and knowledge that is not publicly available, such as local or traditional knowledge that cannot be shared outside the group of knowledge holders, or medical/psychological data collected with prior informed consent restricting the use of data, as well as for quality management. Whenever possible, the sets of metadata should contain information on the geographical location and temporal reference of the underlying data as well as the scientific and ILK protocol with which they were collected.