The CDC's recommendation that doctors give every pregnant woman a Tdap vaccination during every pregnancy â regardless of whether a woman has already received one dose of Tdap â is an off-label use of the vaccine.
Literals and Constants in C#. Literal is a source code representation of a value, i.e. it is a value that has been hard-coded directly into your source. x is a variable, and 100 is a literal.
Parameters: 1  expression â A SQL expression, such as a expression or a Python string which will be coerced into a bound literal value. 2  type_ â A class or instance indicating the type to which the expression is coerced.