What does case sensitive mean ?
Case sensitive refers to a situation where a sequence of letters has different meanings based on whether the letters are uppercase or lowercase. Under the rules of case sensitivity, RainBow and rainbow are considered two different words.Computer PasswordsComputer passwords are often made case sensitive. This adds an extra measure of security by requiring people to enter the correct case, in addition to the correct sequence of letters.ProgrammingProgramming languages, like SQL, also use case sensitivity where commands in all caps have different meanings than lowercase.Email and the WebSome companies, or web providers, may use case-sensitive email addresses–JohnSmith@domain.com versus johnsmith@domain.com. Most email addresses are not case sensitive because case sensitivity leaves a lot of room for error.Log-in ProblemsMany people have problems logging in to systems with case-sensitive passwords. Leaving the caps lock on is the most common mistake.Letters Versus. Numbers and SymbolsCase
