78:: Users expect information retrieval systems to be able to have correct case sensitivity depending on the nature of an operation. Users looking for the word "dog" in an online journal probably do not wish to differentiate between "dog" or "Dog", as this is a writing distinction; the word should be matched whether it appears at the beginning of a sentence or not. On the other hand, users looking for information about a brand name, trademark, human name, or city name may be interested in performing a case-sensitive operation to filter out irrelevant results. For example, somebody searching for the name "Jade" would not want to find references to the mineral called "jade". On the English Knowledge for example a search for
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are internally case-sensitive, and a readme.txt and a Readme.txt can coexist in the same directory. However, for practical purposes filenames behave as case-insensitive as far as users and most software are concerned. This can cause problems for developers or software coming from Unix-like
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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
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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
337:, because most file systems in other Unix-like environments are case-sensitive, and, for example, a source code tree for software for Unix-like systems might have both a file named Makefile and a file named makefile in the same directory. In addition, some Mac
273:, for example, variable names are case-sensitive but function names are not case-sensitive. This means that if a function is defined in lowercase, it can be called in uppercase, but if a variable is defined in lowercase, it cannot be referred to in uppercase.
92:: Authentication systems usually treat usernames as case-insensitive to make them easier to remember, reducing typing complexity, and eliminate the possibility of both mistakes and
63:, for example, or something with no ambiguity regarding capitalization and ambiguity between two or more terms cut down by capitalization, they may prefer a case-sensitive search.
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mode (so that a file created as readme.txt is shown as readme.txt and a file created as Readme.txt is shown as Readme.txt) by default. This causes some issues for developers and
59:, "dog" and "Dog" are of the same significance to them. Thus, they request a case-insensitive search. But when they search an online encyclopedia for information about the
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were case-insensitive and not case-preserving, so that a file whose name is entered as readme.txt or ReadMe.txt is saved as README.TXT. Later, with
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when two usernames are identical in every aspect except the case of one of their letters. However, these systems are not case-blind. They
106:: Authentication systems usually treat passwords as case-sensitive. This enables the users to increase the complexity of their passwords.
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systems, filenames are usually case-sensitive (there can be separate readme.txt and Readme.txt files in the same directory).
130:: Some programming languages are case-sensitive for their variable names while others are not. For more details, see below.
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The link "Friendly Fire" must go through the (disambiguation) qualifier in a
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in a case-insensitive (so that there cannot be a readme.txt and a Readme.txt in the same directory) but
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SQL most operations and searches are case-sensitive by default, while in most other
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engine is basically case-insensitive, with no option for case-sensitive search. In
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is case-insensitive and ignores underscores, as long as the first characters match.
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environments, similar to the problems with macOS case-insensitive file systems.
538:"case-sensitive-search - case sensitive google search - Google Project Hosting"
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sections of a URL may or may not be case-sensitive, depending on the receiving
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so that users may choose an aesthetically pleasing username combination.
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assume case insensitivity and fail on case-sensitive file systems.
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446:(February 1978). "Chapter 2: Types, Operators and Expressions".
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452:(1st ed.). Englewood Cliffs, NJ: Prentice Hall. p.
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Although one can explicitly set a single database or column
611:"Case Sensitivity in Subsystem for UNIX-based Applications"
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237:(for the syntax, and for some vendor implementations, e.g.
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operating systems treat file names case-sensitively while
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31:"A" are the two case variants of the first letter in the
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Case sensitivity may differ depending on the situation:
86:(capitalized "Fire") returns the disambiguation page.
301:Case-insensitive operations are sometimes said to
321:is somewhat unusual in that, by default, it uses
298:'s SQL searches are case-insensitive by default.
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120:is case-insensitive but, for most file systems,
98:preserve the case of the characters in the name
636:"Filenames are Case Sensitive on NTFS Volumes"
564:Oracle SQL Developer User's Guide, Release 1.5
586:"C.5.5.1 Case Sensitivity in String Searches"
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177:are case-sensitive for their identifiers (
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561:"2.10 Making Queries Case Insensitive".
488:(1st ed.). O'Reilly Media. p.
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164:parts, however, are strictly lowercase.
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368:. Later Windows file systems such as
253:. There are also languages, such as
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514:"Nim Manual: Identifier Equality"
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82:returns the military article but
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124:. For more details, see below.
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642:. 2006-11-01. Archived from
482:"Chapter 2: Language Basics"
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590:MySQL 5.0 Reference Manual
449:The C Programming Language
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169:In programming languages
45:uppercase and lowercase
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175:programming languages
67:Areas of significance
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406:to be case-sensitive
239:Microsoft SQL Server
221:(an exception being
478:Matsumoto, Yukihiro
440:Kernighan, Brian W.
241:, the data itself)
572:Oracle Corporation
518:nim-lang.github.io
486:Ruby in a nutshell
444:Ritchie, Dennis M.
313:In filesystems in
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118:Microsoft Windows
112:: Traditionally,
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227:Common Lisp
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621:2013-05-20
596:2013-05-20
547:2013-05-20
523:2019-04-27
414:References
362:Windows 95
344:The older
339:Installers
154:web server
110:File names
404:collation
391:WP:INTDAB
315:Unix-like
303:fold case
267:semantics
223:BBC BASIC
150:authority
114:Unix-like
104:Passwords
90:Usernames
76:Searching
29:uppercase
25:lowercase
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146:fragment
27:"a" and
592:. MySQL
255:Haskell
231:Fortran
217:, most
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346:MS-DOS
292:Oracle
261:, and
259:Prolog
251:ooRexx
243:Pascal
219:BASICs
203:Python
158:scheme
156:. The
148:, and
136:: The
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568:(PDF)
377:Notes
354:FAT16
350:FAT12
319:MacOS
207:Swift
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142:query
94:fraud
494:ISBN
458:ISBN
426:See
370:NTFS
358:VFAT
352:and
327:APFS
325:and
323:HFS+
296:DBMS
249:and
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211:ABAP
205:and
199:Ruby
187:Java
162:host
160:and
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