Q. Must all data from the research project be deposited? Or only data used for publications?

It is mandatory to archive data owned by NIE.

For data of completed projects

Deposit data of completed projects in the Research Data Archive (Restricted).

For publication-related data

Deposit publication-related data in the NIE Data Repository. These data must be anonymized.

However, if the final data related to your publication contain sensitive information, the data should be deposited in the Research Data Archive (Restricted). See also https://libfaqs.nie.edu.sg/faq/266648.