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Open Access : Copyright & Licensing

Copyright Links

OU Libraries Copyright Resources LibGuide

Find general information about copyright, link to tools to help you determine if a use is fair or whether material is under copyright, learn how to research rights holders, and use electronic public domain materials.

Basics of Copyright

Creative Commons Licenses

CC BY = Attribution only (most open)

CC BY-SA = Attribution plus share derivatives alike

CC BY-ND = Attribution no derivatives allowed

CC BY-NC = Attribution only restricted to non-commercial use

CC BY-NC-SA = Attribution only restricted to non-commercial use that is shared openly

CC BY-NC-ND = Attribution only or non-commercial but no derivaties

See Creative Commons website for more information.

Open Data Licensing


PDDL - Public Domain Dedication & License "Public domain for data/databases"

ODC-By - Attribution License

ODC-ODbL - Open Database License & Attribution Share-Alike for data/databases