White House Office of Science and Technology Policy (2013): Expanding Public Access to the Results of Federally Funded Research
Browse article and data sharing requirements by Federal Agency: SPARC
Additional funding agency requirements available in SHERPA/JULIET.
American Psychological Association – Certification of Compliance with APA Ethical Principles (see Section 8.14 on Sharing Research Data for Verification)
For journal publishers not listed here, see the publisher’s site or instructions for the specific journal you’re publishing in.
Metadata can be thought of as a way of reporting on your data and is beneficial in helping others find and use your data.
If you are looking for a possible metadata schema to use with your own project, consider this list from the Digital Curation Centre in the United Kingdom: List of Metadata Standards