Data is all around us, but can we really use it?

One of the ways in which we protect subjects and data is to use appropriate licenses for the use of data. Licenses are a sort of contract in that the licensor grants permission to use the data in a specific way to a licensee. Licenses are used for both software products (algorithms, components) and data. The following license models are the most commonly used ones in contemporary software:

• Proprietary license: It is a model whereby the licensor owns the data and grants permission to use the data for certain purposes, often for profit. In such a contract, the parties usually regulate what the data can be used for, how, and for how long. These licenses also regulate liabilities for both parties.
• Permissive open licenses: These are licenses that provide the licensee almost unrestricted access to the data, at the same time limiting the liability of the licensor. The licensee is often not required to provide access to the licensee...