In GIS databases, what is metadata?

Metadata plays a crucial role in the context of GIS databases as it refers to data that provides information about other data. This includes essential details such as the source of the data, how it was collected, its format, and its accuracy or reliability. By documenting this information, users can better understand the context and quality of the data they are working with, which is vital for effective analysis and decision-making in GIS applications.

In GIS, metadata facilitates the sharing and reusability of geographic datasets, helping users to quickly assess whether specific data is suitable for their needs. This information allows for efficient data management and enhances collaboration among different users and organizations in a GIS environment.

The other options encompass concepts that are not defined as metadata. For instance, describing the organization of a database pertains to its architecture or schema rather than metadata. Storing user permissions relates to access control mechanisms rather than data description. Lastly, data that is no longer needed would be considered obsolete or deprecated, not metadata. Therefore, identifying metadata accurately as data about other data is essential for understanding the integrity and usability of information within a GIS database.