Yes, you can ask for your personal data to be deleted when, for example, the data the company holds on you is no longer needed or when your data has been used unlawfully. Personal data provided when you were a child can be deleted at any time.
This right also applies online and is often referred to as the ‘right to be forgotten’. In specific circ*mstances, you may ask companies that have made your personal data available online to delete it. Those companies are also obliged to take reasonable steps to inform other companies (controllers) that are processing the personal data that the data subject has requested the erasure of any links to, or copies of, that personal data.
It’s worth keeping in mind that this right is not an absolute right, meaning that other rights, such as the freedom of expression and scientific research, are also safeguarded.