Data ownership means having control over a piece of data and the right to decide how it's used. If you "own" the data, you get to make choices about who can access it, how it can be shared, or whether it can be deleted. Data ownership gives you the power to make decisions about the data. It can involve legal rights, responsibilities, and sometimes accountability for how the data is used. We rather speak about rights and obligations for both data subjects and data controllers, rather than using the word data ownership.
