For questions about the International Components for Unicode (ICU) project, which provides collation in some databases.

International Components for Unicode (ICU) is a mature, widely used set of C/C++ and Java libraries providing Unicode and Globalization support for software applications.

Used by some databases for collation: Compare strings according to the conventions and standards of a particular language, region or country. ICU's collation is based on the Unicode Collation Algorithm plus locale-specific comparison rules from the Common Locale Data Repository, a comprehensive source for this type of data.