Using char and varchar Data. The char and varchar data types store data composed of the following: Uppercase and lowercase characters such as a, b, and C. Numerals such as 1, 2, and 3. Special characters such as the at sign (@), ampersand (&), and exclamation point (!).
Definition of barrier for English Language Learners. : something (such as a fence or natural obstacle) that prevents or blocks movement from one place to another. : a law, rule, problem, etc., that makes something difficult or impossible.
Full Definition of HEDGE. 1. a: a fence or boundary formed by a dense row of shrubs or low trees b: barrier, limit. 2. : a means of protection or defense (as against financial loss). 3. : a calculatedly noncommittal or evasive statement. See hedge defined for English-language learners. See hedge defined for kids.