There is no one size fits all for metadata.
There are two main systems for metadata description (schemas) - specialised and generalised.
- Specialised schemas require more time and expertise, but results in a much better description of the data. If your data matches a developed schema, the use of that schema will result in the best metadata for your data.
- Generalised schemas require limited time and expertise, but the description may be inadequate. They include what are considered the essential elements to describe any data