In this scenario, according to the General Principles of Informatics Ethics, the individual-level data should not be given to the research team unless the information is allowed to be disclosed for research purposes.
For the solutions, a research ethics committee (REC) has the authority to approve the research to ensure the ethical safety and scientific merit of the research. After getting approval from the REC and the organization responsible for this database, the information can be utilized in the research. However, data anonymization is needed to protect private or sensitive information.