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.
2. dyke-a barrier constructed to contain the flow of water or to keep out the sea. dam, dike. barrier-a structure or object that impedes free movement. milldam-dam to make a millpond to provide power for a water mill.owever, it has been increasingly adopted as a preferred term by young or radical homosexuals and in the academic community. In the mainstream homosexual community, gay and lesbian remain the terms of choice. (a term used to refer to a female homosexual or lesbian.). [1930â35; of uncertain origin]. dykeâ²y, adj.