In computing, a '''legacy encoding''' is a [[character encoding]] that continues to be used despite being obsoleted by another encoding. An encoding considered legacy in one context may remain the preferred encoding in a different context. Today the term is most commonly used in the context of [[Unicode|Unicodification]], where it refers to encodings that do not cover all Unicode code points. Even encodings which postdate the first Unicode standard, such as [[ISO-8859-15]], may be considered legacy encodings in this usage.<ref>[http://www.basistech.co.jp/knowledge-center/database/uc-trillium-2.ppt "Processing database information using Unicode, a case study"]</ref>
