Editing Case sensitivity (section)

==In text search==
A text search operation could be case-sensitive or case-insensitive, depending on the system, application, or context. The user can in many cases specify whether a search is sensitive to case, e.g. in most text editors, word processors, and Web browsers.  A case-insensitive search is more comprehensive, finding "Language" (at the beginning of a sentence), "language", and "LANGUAGE" (in a title in capitals); a case-sensitive search will find the computer language "BASIC" but exclude most of the many unwanted instances of the word. For example, the [[Google Search]] engine is basically case-insensitive, with no option for case-sensitive search.<ref>{{cite web|url=https://code.google.com/p/case-sensitive-search/ |title=case-sensitive-search - case sensitive google search - Google Project Hosting |work=code.google.com |access-date=2013-05-20}}</ref>  In [[Oracle database|Oracle]] SQL, most operations and searches are case-sensitive by default,<ref>{{cite book|url=http://docs.oracle.com/cd/E12151_01/doc.150/e12152.pdf|title=Oracle SQL Developer User's Guide, Release 1.5|section=2.10 Making Queries Case Insensitive|date=August 2013|publisher=[[Oracle Corporation]]}}</ref> while in most other [[Database management system|DBMS]]es, SQL searches are case-insensitive by default.<ref>{{cite web|url=http://dev.mysql.com/doc/refman/5.0/en/case-sensitivity.html |work= MySQL 5.0 Reference Manual |title=C.5.5.1 Case Sensitivity in String Searches |publisher=MySQL  |access-date=2013-05-20}}</ref>

Case-insensitive operations are sometimes said to '''fold case''', from the idea of folding the character code table so that upper- and lowercase letters coincide.